6 SERIES GP Security Grilles 150 200 250 300 400 500 600 PIVOT LINE GRILLE HEIGHT - mm ALTERNATIVE SIZE FROM PIVOT 150 POINT 200 250 300 400 500 600 GRILLE WIDTH - mm 100 50 40 30 20 10 5 4 3 2. when doors are open. TRH-A series grilles have a simple design which makes them useful for incorporation in all styles of architecture. Tamarack Technologies, Inc. Clean-room diffusers. Iron Maindoor Laser Safety Grill, For Home ₹. London’s Decorative Metalwork and Metal Grille Specialist. 012. A transfer grille is a grille or register installed in the wall or above the door to connect the closed room with an open space such as a hallway or living room, thereby providing an. 010Gilberts Non-vision Louvred Grille provides optimal airflow performance. 30 mm wide front border. However, the door creates a pretty tight seal so I'm wondering if there's enough airflow to do so without overworking the dryer. Operation: The units are operated by a 24V DC electrical supply. Ideal for low velocity air handling systems, it can be operated as a stand-alone unit. IP£X grille rating that provides an open area of 23%. The damper can be suitably masked on both sides either with steel type A grilles or aluminium non-vision type B grilles. Designed for installation into fire resisting doors, walls and ducts. heating and coolingTransfer Grille Size Calculator: Adjust the data in the blue boxes, press enter or click "Calculate" Door Undercut : Room CFM : Height : Width : Needed Transfer Grille Area: Jump Duct Diameter " by " 24. The problem is that sound (and a small amount of light) pass freely through the vents negating all privacy of closing the door. 008. ) 0. Gilberts’ NV3 door transfer grilles allow Regulatory flow of fresh air whilst being vision proof. Transfer grilles are designed for use in doors and partitions to allow for smooth transfer of air between spaces. duct or transfer grille), and perimeter walls insulated in accordance with Section N1102. ) Ak Factor Core Velocity Velocity Pressure Neg. Description. Especially useful for narrow doors or fireblock installations. Long throw, high capacity supply grille with rotating drum. 048 350. ft. Minimum size is 6" x 4" (152 x 102). 5mm Pitch Neck Size = List Height - 15 50mm Opening Size = List Width x Height Introduction Gilberts SS-GE Series provides a comprehensive range of stainless steel Eggcrate type grilles to suit all types of extractTRANSFER (OR) DOOR GRILLES TRANSFER GRILLES TECNALCO 4 DGT-1 DGT-2 Engineering and Performance Data Transfer Grilles The tabulated performance data includes Volume of air, Area factor and Discharge velocity. See the crime statistics in your area here. 021 250. jpg. 03 m 2 ) (of grille area) to 100 cfm (. In many cases, pipes and ducts. From the family garage to 70,000 square feet today. Where return air is taken from a closet smaller than 30 square feet (2. In the event of an alarm condition, or power failure, the smoke shutters shut, preventing the passage of cold smoke. Grilles are available in a range of sizes and offer up to 60 minutes integrity in accordance with BS 476-22. A rater-measured pressure differential of ≥ -5 Pascals and ≤ +5 Pascals (0. The sight–proof blade configuration and unobtrusive appearance make Krueger’s 600/5600 series grille an ideal choice for wall or door air transfer from room to room. TYPE GPS3 & GPP3 -Air transfer grille arrangement comprising of a high security bolt fixing unit on one side and a lower security clutch screw unit on the other. Especially useful for narrow doors or fireblock installations. or walls. Standard finish is natural anodised while other finishes including powder coat are available to suit the interior and architectural design requirements. A range. Reinforced terminals. Single Louver Grilles: Titus’ 300/350 Series supply grilles define the standard for the industry. The DGC is manufactured as per the DG but in a channel frame. Non-Vision Transfer Grilles Single & Double CoresType DTG/WTG Core Only. transfer of room air to another, i. DSR units may be used in series to increase transmission loss. Yes, you should absolutely install a dedicated grille. Product 150 Intumescent Ventilation Grilles (SVG & HMG)blades. Get Quote. A range of grille sizes can be produced from two modules of size 150mm by 150mm and 225mm by 112mm each 40mm thick. Manufacturer : Madel. Nominal sizes 150 × 105 – 1500 × 985 mm. 4. 0006 0. Static Pressure 100. 1 Double Defl ection Grille AUR 6 1. The Halton TVC transfer grille can also be used together with an opposite frame accessory (OF) to complete transfer unit for 25 to 50 mm thick doors or partition walls. Steel Maximum Security Transfer Grille with Rounded Perforations. We can accommodate bespoke sizes or larger quantities – please get in touch with our team on 02920 857. From the family garage to 70,000 square feet today. Specifications - Gilberts (Blackpool) EN English Deutsch Français Español Português Italiano Român Nederlands Latina Dansk Svenska Norsk Magyar Bahasa Indonesia. Volume flow rate range 2 – 850 l/s or 7 – 3060 m³/h. openings", but undercut doors, and/or transfer grilles (if large enough) located near the floor could meet the requirment of this portion of the standard. A high performance, standard vision intumescent air transfer grille for walls, doors and ventilation ducts. Download Now. Browse a range of intumescent vents also known as air transfer grilles and fire vents. We are the world's oldest manufacturer of decorative metal grilles. Discreet, but attractive, this robust extruded aluminium grille incorporates a slotted, linear airway across its length and locates at the bottom of the door. A rater-measured pressure differential of ≥ -5 Pascals and ≤ +5 Pascals (0. Aluminum door return grille with sight-proof blades parallel to short dimension. 01924 444 174 [email protected] could be soil gases such as radon or fumes from paints, pesticides, or fuel stored in the crawlspace. Single Core with Flat Frame. docx] Performance Data. Height : 1005 mm. Applications. Series GP Security Grilles. Allows window to remain and door closed for a room when operating a whole house fan. com Web: SERIES HG Sport & Gymnasium Grille Ordering Specification QUANTITY SERIES: HG SIZE (mm LENGTH X HEIGHT) FINISH 2 HG. For more friendly and professional advice on air grilles, please get in touch via our contact us page or give us a call on 01842 765657. Normally, when there is ducted returns, the filter is located at the air handler. <br><br>The Perfect Balance In-Door Return Air Pathway is designed to maintain adequate air flow between rooms and eliminate pressure imbalancesallowing each room. The DG door transfer grilles are designed for use in doors where constant air transfer with non-vision is required. Door / Transfer Grilles Products Matching Your Selection METALAIRE is the flagship brand of Metal Industries Inc. Easy to assemble. - Quality 0. Heavy Duty Registers and Grilles. GILBERTS Head Office and Works Gilberts FB Series provides a compact, efficient range of intumescent fire dampers designed to satisfy all types of air transfer application in offices, shops, schools, hospitals and many other commercial projects. For both fire and smoke protection, see the Lorient LVN20S Air Transfer Grille. The damper can be suitably masked on both sides either with steel type A grilles or aluminium non-vision type B grilles. When mounted into a door, our telescopic frame can facilitate a door thickness between 28 and 52mm, with light tight or vision proof cores to meet the application requirement. 001. fitting a conventional grille to a wall or door will totally negate other measures taken to prevent the spread of fire, hot smoke andGrilles Type AH · WAP · AF Installation situation Type AH, AF ≥X Nomenclature ‡ in l/s/m based on 1000mm nominal grille length . Vision Proof Transfer Grilles Introduction Performance Data References Used Selection Proceedure Gilberts NV Series provides a comprehensive and traditional range of vision proof grilles to suit all manner and type of air transfer application through doors, walls and partitions. Carpets will filter the air and remove all the candle soot and other airborne particulate, as it is forced under the bedroom door due to a high pressure difference. Product, Technical. 7 Curved Blade Register ACB 29 1. The DGC door transfer cavity grille are the most economical form of grilles for partitions, panels or sliding doors. Lorient Intumescent Air Transfer Grilles are suitable for ventilation in fire compartment walls or doors. 006 0. Over the years we have built a reputation for providing an extensive range of attractively styled, contemporary, value engineered products at the best in. Can be used to provide resistance to fire and hot smoke of up to 60 minutes in doors and walls. 012. A definitive guide to operating theatre diffuser selection in accordance with HTM-03-01. For air transfer applications, the channel section core with integral noise absorption. Our Acoustic Transfer Grilles are available in a range of sizes and finishes to suit your requirements. The above-door transfer grille simply has two grilles located above the door between the room and common space, one on each wall, with offset baffles to limit sound transmission. Download. Established in 1972 in the family garage, HVC Supplies has developed steadily over more than 45 years to become the industry leading company it is today. With high quality and competitive pricing these grilles form the back bone of a standard offering that will meet any application requirements. Door Furniture; Drawers and Drawer Runners; Eyes; Feet; Fixings Fasteners; Formed Section; Gastronorm Containers; Gates; Glass Canopy; Handles. DG-3 - Double Flange Door/Transfer Grille. Tour de Competence Competence - exciting staged. These grilles are compatible with doors or partitions as thin as 1 3/8 in. And with an experienced team of Sales. Long throw, high capacity supply grille with rotating drum. Blades are chevron in configreation and are mounted in a fixed position ina rigid PVC track in an integral part of the frame. ) Ak Factor Core Velocity Velocity Pressure Neg. ago. co. Transfer Grille Sizing Calculations. We supply a range of Stainless Steel ventilation grilles, trickle vents, hit and miss vents. Lorient Intumescent Air Transfer Grilles are used to provide an answer to situations where ventilation is required in fire compartment walls or doors. $4000. Series GE Eggcrate Grilles. Series AV Door Transfer Grille. 6 Egg Crate Grille (15Mm) AECL 26 1. Download quality free BIM & Revit Components for the G Series - Transfer Grilles from Colman Air Distribution for free. Using the same intumescent louvred slat configuration as the LVN20, but incorporating an electro mechanically operated smoke shutter mechanism. Discreet, but attractive, this robust extruded aluminium grille incorporates a slotted, linear airway across its length and locates at the bottom of the door. 001. We are a manufacturer of Grilles, Diffusers and Louvres with a special emphasis in the fabrication and technical knowledge of Swirl Diffusers. Displacement diffusers. We are the world's oldest manufacturer of decorative metal grilles. It adjusts to suit a door thickness from 1-3/8" to 1-7/8". Lorient has been developing high quality intumescent air transfer grilles for over 40 years; combining air movement with fire protection & making buildings s. Our range of combined intumescent fire + smoke air transfer grilles can be used in all applications where cold smoke containment is required. Maximum size is 36" x 36" (914 x 914). 7" x 3. From standard grilles and registers, to its architectural line of Formations® linear slot diffusers, along with a newly released series of displacement. Download catalogue. 033. Use your stud finder and level to map out the exact location where you’re going to cut through the wallboard. Wrapping up smoke and fire protection with our range of Fire Dampers, Smoke Dampers, Smoke/ Fire Dampers, Intumescent Air Transfer Grilles and Air Volume Control Dampers all developed to the latest test standards. Colour : Buff,Silver,White. 9700 9700 - Stainless Steel Door. 98 -9%. If it’s a load bearing wall with a big header above the door jamb leave it as is, if it’s just to hold the drywall you can reframe accordingly. Also associated with high pressure. They can be used for providing dampers in ductwork. Save4. 200. Integrated flow regulation damper. Working from. wait: 1 min. fitting a conventional grille to a wall or door will totally negate other measures taken to prevent the spread of fire, hot smoke andGrilles Type AH · WAP · AF Installation situation Type AH, AF ≥X Nomenclature ‡ in l/s/m based on 1000mm nominal grille length . 004. DG-3 - Double Flange Door/Transfer Grille. Nominal sizes 150 × 105 – 1500 × 985 mm. Transfer grilles shall use 50 square inches (of grille area) to 100 cfm (of. Air Distribution | GDL Air Systems Limited | EnglandDomestic Warm Air Grilles. Your guide to trusted BBB Ratings, customer reviews and BBB Accredited businesses. ) 0. Floor diffusers. The Gilberts non-vision stainless steel louvred grille is suitable for surface mounting in both door and wall applications and is ideal for both standard air transfer and fire rated applications where intumescent type fire dampers are utilised. This may cause the damper to scream. NV2: As NV1 but with a spare backing frame for fitting into doors. The LVH intumescent air transfer grilles available from Lorient Pty Ltd are specifically designed for use in fire rated door assemblies where pressure relief or extra ventilation is required. Maximum size is 36" x 36" (914 x 914). For Enquiries contact us on +44 (0)1384 376555; Recently viewed items ;The Halton TVC transfer grille can also be used together with an opposite frame accessory (OF) to complete transfer unit for 25 to 50 mm thick doors or partition walls. The range is available with a wide variety of frame and fixing options to suit various design needs. Trimec. Published by Raúl Galdrán from BIMETRICAL on 1/8/2018. 5m/s and NC level less than 15. From standard grilles and registers, to its architectural line of Formations® linear slot diffusers, along with a newly released series of displacement. Series FB Air Transfer Grille. 7m/s Volume flow rates apply to a nominal grille length [L] of 1000mm, maximum sound power level of the air. Install the Pyroplex Fire. Click here to download. Gilberts NV Series provides a comprehensive and traditional range of vision proof grilles to suit all manner and type of air transfer application through doors, walls and partitions. The LVN20S provides a unique solution to the problem of containing both fire + smoke in emergency conditions yet offering good air transfer through doors in everyday use. 001 0. The LVH44 dampers can be assembled in multi-modules to protect large apertures. Lattice and perforated security grilles reduce the risk of damage and disassembly associated with traditional grilles in secure areas. Even more important is the operation of these systems, particularly mechanical and plumbing. Gilberts Non-Vision Louvred Grille | Air Transfer Grille Cover. Clearance dimension 430x75 mm. DESCRIPTION: Construction: Frame and blades are 6063 extruded aluminum alloy with 200-R1 satin anodized finish. Table 1RCM PRODUCTS, 12-14 Sunbeam Road, Kempston, Bedford, MK42 7BY T: 01234 843303 F: 01908 483930 E: [email protected]Transfer grilles are designed for use in doors and partitions to allow for smooth transfer of air between spaces. Introduction Gilberts NV Series provides a comprehensive and traditional range of vision proof grilles to suit all manner and type of air transfer application through doors, walls and partitions. 304 Stainless Steel Construction (Optional 316 Stainless Steel) Z-Shaped Deflection Vanes Set on 1” Centers. METALAIRE is the flagship brand of Metal Industries Inc. Designed for door mounting. Sight-Proof (ATG1) + Finely spaced, chevron style blades provide an attractive sight-proof appearance. It may be surprising that just these three systems — mechanical, electrical and plumbing (MEP) — can make up as much as 15% of the total environmental footprint of a building's materials. Return Air Pathway In-door vent, In-wall vent, and also specified in as a Transfer Grille. In line with the smaller Louvres this series offers a high resistance to weather ingress combined with a good 50% free and both flanged and recessed channel frame options can be selected along with standard bird guard and insect screen accessories. Because transfer grilles connect two rooms or a room and a hallway, there is nothing that is blocking sound between the two areas. VAT Number: GB 154 1026 07. These fire resistant air transfer grilles are developed to allow the free circulation of air at room temperature through construction elements (walls, doors etc. TRH-A series grilles have a simple design which makes them useful for incorporation in all styles of architecture. Countersunk holes. Line the aperture with a 6mm hardwood liner. GRILLES AND REGISTERS F DOOR/TRANSFER GRILLES PERFORMANCE DATA: DOOR/TRANSFER GRILLES – 5100 AND 6100 SERIES MODELS: 51DG, 61DG Listed Duct Size (inches) Alternate Sizes (inches) Core Area (sq. 450x92. the transfer grills. “While undercutting doors can create part of the return air path, wall transfer grilles or jump ducts should be installed to prevent the return problems,” the Building Science Corporation warns. 57 (29 grilles required) 0. Est. H Nominal grille heigh t. Available in either steel or aluminum construction with either single or double flange frame options. GILBERTS DAMPERS 8 MAY 2005 PUBLICATION Features 60 or 120 Minute Fire Rating. comDoor Grille TROX (South Africa) (Pty) Ltd. Discreet, but attractive, this robust extruded aluminium grille incorporates a slotted, linear airway across its length and locates at the bottom of the door single doors, double doors and louvre screens. Gilberts has built a reputation for providing an extensive range of contemporary, value engineered products at the best in competitive. 6 SERIES GP Security Grilles 150 200 250 300 400 500 600 PIVOT LINE GRILLE HEIGHT - mm ALTERNATIVE SIZE FROM PIVOT 150 POINT 200 250 300 400 500 600 GRILLE WIDTH - mm 100 50 40 30 20 10 5 4 3 2. 6") HVAC OV 17. 54 KB: Preview: waterloo-air-products-plc_ns-non-vision-transfer-grilles_photo_1_a22cec27-d4cd-42c6-aff5-75aabd21432a. Download. MSPG. Day-to-day this enables efficient ventilation but during a fire will seal shut, stopping the fire spreading further. 5. General. uk HomeThe ATG/BF comes complete with mounting flange plus a loose telescopic rear flange to suit a minimum thickness of 42mm up to a maximum thickness of 110mm door or partition. Maybe you can have transfer grilles installed to those rooms verse ducted returns. 00 - $80. These are often used in bathroom doors and mechanical room doors for the purpose of allowing make up air to enter the room when the fan is on and the door is closed. This reduces noise and increases airflow. Discover our wide range of products within the Door grilles category and benefit from 20+ years of expertise Personal advice Competitive prices. Static Pressure 100. NV6 is a Vision proof flanged grille suitable for surface mounting onto doors, wall or partitions. air transfer grilles can be used in all applications where cold smoke containment is required. In many cases, pipes and ducts. The range is available with a wide variety of frame and fixing options to suit various design needs. Nailor 51DG and 61DG Series Door Grilles are designed to be completely sight proof and unobtrusive in appearance. My question is, can you essentially install a duct from the location of the grille, to somewhere else inside the house? (for instance down a hallway, it will still have a vent for air return, just moving that away from my actual. If transfer grilles or jump ducts are used, refer to the balancing report provided by the HVAC contractor for the bedroom air flows to size the grilles or ducts. These grilles also have a 6mm vermin proof mesh fitted to both faces, so unwelcome. 008 0. supplied by Gilberts with each Grille batch. Stainless Steel Door Grille with Single Flat Frame (Auxiliary Frame, Dual Core) The 9700 series transfer grilles are designed to ensure visual privacy while providing air circulation from one area to another. Clearance dimension 430x75 mm. Nailor 51DG and 61DG Series Door Grilles are designed to be completely sight proof and unobtrusive in appearance. Modern Slavery Policy. e. Air transfer grilles. A door or partition non-vision grille incorporating inverted chevron blade…. VIEW XG-DG Series. For the size of the installation hole, see Dimensions (L-10)x (H-10). James Gilbert & Son specialises in high quality decorative metalwork. Cut the wallboard using your drywall saw and set the metal frame in place. Nailor 51EC, 61EC, and 67EC Series Eggcrate Grilles and Registers feature high free area and a clean, crisp architectural look. frame: telescopic frame suitable for doors or partitions from 25 – 55 mm thickness (fixed on both sides of the door) material: extruded aluminium profile for frame and blades: sizes:Above door transfer grilles. This 24V DC supply provides Today the range includes duct mounting smoke/fire dampers, curtain fire dampers, smoke evacuation dampers, intumescent air transfer grilles and air volume control dampers Engineering led our products are designed to offer the highest level of performance safety and security and are tested to the relevant BS/EN standards as well as CE marked. The Manual J (i. Aluminum door grilles. 6171Revision: Date: Units: Page: Model: ® OF Submittal: XG-DGDFSS Stainless Door Grilles Door. . LVH20S intumescent fire + smokeAcoustic Transfer Grilles DSR Acoustic transfer grille DSRX Acoustic transfer grille for variable depth DSR2 Back to back acoustic transfer grille. Door Transfer Grilles. Ventilation grille with angled blades. Door grilles provide visual security and limits light while allowing air transfer through doors or walls. DG-3 - Double Flange Door/Transfer Grille DESCRIPTION: Construction: Frame and blades are 6063 extruded aluminum alloy with 200-R1 satin anodized finish. The Lorient LVN20S intumescent air transfer grille system contains both fire and smoke in the event of a fire while also allowing good air flow through doors during everyday use. Genuine Comfort find that air return grilles tend to be the better choice between transfer grilles and air return grilles. Acoustic vent grille to allow ventilation whilst reducing sound transfer from room to room. Use either jumper ducts in the ceiling, or install a grille low on the bedroom wall, and then high on the hallway wall, to minimize sound transfer. 19. A door undercut is a space between the door and the floor below it that’s large enough to allow air transfer between rooms. Servicing enquiries: servicing@vent-axia. Includes Grille, Installation Screws, Baffle, Sheet Metal Housing. Aluminum Construction. ft. Paul_Ott 2 yr. The LVN20 is a non-vision intumescent air transfer grille. Exterior Stainless Steel Safety Door Grill, For Home ₹ 900/ Square Feet. It's a return grille, most likely. Download. They allow free movement of air but allow no sight of one side from the other. Or leave the doors open, cut the bottom off the door, 3" will help but looks weird. For the size of the installation hole, see Dimensions (L-10)x (H-10). Individual grilles, grille bands, multiple grilles, and long throw nozzle grilles achieve different throw distances. Note: When framing both sides of the door or partition opening, use the TGF frame with the TG Grille. Height : 1005 mm. Contact Us. Clean-room diffusers. Given that the free area of the relevant grille type is 62% and the velocity is 2. Blades are chevron in configreation and are mounted in a fixed position ina rigid PVC track in an integral part of the frame. Presto ! The grill vent covers require drilling a small hole in the alum for the screws. Featuring all-welded construction and integral wall sleeves. HVC Supplies offer one of the widest ranges of grilles, diffusers, louvre systems, volume control dampers and fire dampers available from any UK manufacturer, with our range being constantly expanded to suit new industry requirements and customer demands. 170 in stock for next day delivery. That does not even come close to the negative pressure issues it throws the rest of the home into. One grille is located high on the wall on. ) Ak Factor Core Velocity Velocity Pressure Neg. Specifications - Gilberts (Blackpool) EN English Deutsch Français Español Português Italiano Român Nederlands Latina Dansk Svenska Norsk Magyar Bahasa Indonesia Türkçe Suomi Latvian Lithuanian český русский български العربية Unknown Clifton Rd, Blackpool, FY4 4QT. 301. LVH20S intumescent fire + smokeThe Ligature Resistant Retrofit Exhaust/Supply Grille is designed to replace existing grilles that are not ligature resistant. Model Series 51DG offers the largest free area possible (average > 50%) with a completely sight-proof. . There is an HVAC register in the ceiling, so maybe it can pull the fresh air in through the ductwork? Or should I add a transfer grille in the drywall above the door to let air pass more freely?The air transfer grilles are connected, via a control panel, to a standard fire alarm system. Those results will be discussed in a future report. The next steps are to perform testing to validate the CFD model for room-to-room air transfer via over-door and bottom-of-door transfer grilles, with the eventual goal of using that model to determine the expected airflow volume through the transfer grilles under various conditions. Model DG-FC Louvre Grilles are available in stock sizes and can. The LVH44 dampers can be assembled in multi-modules to protect large. The grilles are carefully constructed to be unobtrusive in appearance for architectural excellence. That does not even come close to the negative pressure issues it throws the rest of the home into. JPG. the the transfer. Series L Linear Bar Grilles. I just finished building a new home and as part of the Energy Star rating transfer grilles were installed above each of the bedroom doors to allow air exchange when the doors are closed. View Product. Titus Door transfer grilles are great for use indoors and partitions. 81 + VAT. 005 150. The Perfect Balance is a transfer grill designed to fit in the door. 6" Inch Door Air Vent Grille Two Sided Ventilation Cover - White - Overflow Ventilation Grill - Door Vent Cover - Free AIR Flow Between Rooms -. In fact, everywhere I've worked it's mandated by code. London’s Decorative Metalwork and Metal Grille Specialist. NV2 Grille. DSR units will only provide acoustic isolation improvements over that of a clear aperture. Install the Air Transfer Grille into the aperture. We are ready to support all customer inquiries: Customer service: [email protected]. heating and cooling load) calculations typically yield the airflow requirements to the various rooms to meet those design loads. Extensive product range. 1 800 222 5932. 8 Aluminium Door Grille AADR 34 1. Our Acoustic Transfer Grilles are available in a range of sizes and finishes to suit your requirements. Therefore: Total No of Grilles = 10m3/s = 57. +27 (0)33 398 1006 Fax. Grilles, Diffusers, External Louvres, Smoke Dampers, Fire Dampers, Volume Control Dampers. The sight–proof blade configuration and unobtrusive appearance make Krueger’s 600/5600 series grille an ideal choice for wall or door air transfer from room to room. Door Transfer Grilles. It is used in both natural and forced-air ventilation systems. ft. 002 0. Total No of Grilles = 10m3/s = 28. 2. ) Nominal Size Core Velocity (fpm) 100 150 200 250 300 350 400 Velocity Pressure (in. Transfer Grille Baffle. This grille features a 3/64” thick perforated face with 1/8” holes on staggered centers. Volume Control DampersStandard and large format air volume control dampers for ducted air systems. 1 Find Your Rep. Gilberts FB700 Series presents a range of Mild Steel Louvred Grilles designed to satisfy all types of air transfer application in offices, shops, schools, hospitals and many other. 004 0. Slim-profile, versatile intumescent block grilles for use in ceilings, doors, walls or ducting. They offer a large free area for great performance yet have a sight proof design. With a choice of sizes, materials, finishes and features we can provide the correct product for any application. DL. Allows air to flow freely between spaces. The Perfect Balance In-Door Return Air Pathway is a grille installed into the bottom. The DGA4 vents in the toilets feature a louvred face for a horizontal air pattern. Normally, with a single RA grille that'll be where the filter is. testregistrierung. 3. ls in m = Throw distance to a bmaximum time averaged air vel ocity of 0. Our combined intumescent fire & smoke air transfer grilles can be used in applications where cold smoke containment is required. F.