Return Air Filter Grille Sizes
158 Available Sizes Of Wood Return Air Filter Grilles And Wood Return Air Vents By Woodairgrille Com Basement Remodeling Remodel Rustic Remodel
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Return air filter grille sizes. 190 perfomace data 190 series submittal drawing. A return air grill should be sized for an air speed of 300 500 fpm feet per minute. Furnace filters come in a range of sizes and different brands and types of furnaces use different filters. 4 ton unit x 144 square inches 576 squared.
673 steel return air filter grille 1 2 fin spacing. Therefore your return air duct and grill size will be 24 by 24 inches. The most common furnace filter sizes are 10 x 20 14 x 20 16 x 24 18 x 30 12 x 12 14 x 24 16 x 25 20 x 20 12 x 20 14 x 25 18 x 18 20 x 24 12 x 24 14 x 30 18 x 20 20 x 25 12 x 30 15 x 20 18 x 24 20 x 30 12 x 36 16 x 20 18 x 25 4 x 24 and 25 x 25 and these sizes. Submittal data 55 kb pdf engineering data 177 kb pdf engineering data free area chart 49 kb pdf.
Since from this example the furnace requires 400 square inches for your filter grille you may use either the 25 by 16 filter grille or the 20 by 20 filter grille. 190 stamped 1 2 blade spacing fixed hinge return air filter grille. Contact factory for sizes not listed. We sell both stock size as well as custom made rectangular grilles and registers as well as stock round registers for both supply and exhaust applications.
Calculate the square root of the total. Made to order grilles and registers. Using those examples you would see their square inches are 280 400 and 400 respectively. First let s define some terms.
Some of the common sizes include 20 by 14 25 by 16 and 20 by 20. Return filter grille specification chart. We are after the ability to move 980cfm so you now divide this number by 400 fpm yielding 2 45 or 2 5. Particle diameter strainers and filters mesh size vs.
The square root of 576 is 24. All of our dayus grilles are cut to size aluminum construction rustproof and only 40 weight versus steel. D minus 2 3 4 d heavy guage steel construction concealed hinges equipped with filter retainers uses 1 nominal disposable filters finish. Air intakes and outlets ventilation systems air intakes and outlets rules of thumbs.
400 fpm is the median air speed for this calculation. Home residential return air filter grilles. 5030 corporate exchange blvd. P 800 433 6341 f 800 223 8461 map.
Se grand rapids mi 49512. 190rf series stamped 1 2 blade spacing with. Return a return draws air into a return duct system with negative pressure compared to the space usually via a fixed grille but. Ventilation systems for ventilation and air handling air change rates ducts and pressure drops charts and diagrams and more.
Hart cooley llc. 1 5 8 c minus 2 3 4.
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