Return Air Filter Grille Sizes

Return a return draws air into a return duct system with negative pressure compared to the space usually via a fixed grille but.

Return air filter grille sizes.

Air intakes and outlets ventilation systems air intakes and outlets rules of thumbs. Se grand rapids mi 49512. Set your store to see local availability add to cart. Submittal data 55 kb pdf engineering data 177 kb pdf engineering data free area chart 49 kb pdf.

Particle diameter opening size. 4 ton unit x 144 square inches 576 squared. Calculate the square root of the total. Grilles the function of a grille is to pull air from a room to return it to the heating or cooling system.

P 800 433 6341 f 800 223 8461 map. Some of the common sizes include 20 by 14 25 by 16 and 20 by 20. First let s define some terms. 4 way wall ceiling register model e104m 10x10 16 28.

Find a decorative metal floor register that will match your home or office decor or go with a standard steel grille with white electro coated and powder coated finish. White return air filter grille model e190rf 20x20 40 76 40 76. Proper sizing and orientation of grilles registers and diffusers may seem like such a simple thing but it s an area where confusion and mistakes are commonly made. Contact factory for sizes not listed.

The square root of 576 is 24. It differs from a register because it does not have a damper to control airflow. 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. Particle diameter strainers and filters mesh size vs.

Exclusive everbilt 20 in. Exclusive everbilt 10 in. 673 steel return air filter grille 1 2 fin spacing. Therefore your return air duct and grill size will be 24 by 24 inches.

Homes will either have multiple small grilles throughout or a single large grille installed in either ceilings or walls. Free delivery with 45 order. A return air grill should be sized for an air speed of 300 500 fpm feet per minute. The air grille and vent cover selection from grainger includes steel metal and wood return air grilles and vent covers.

We are after the ability to move 980cfm so you now divide this number by 400 fpm yielding 2 45 or 2 5. 5030 corporate exchange blvd. Ventilation systems for ventilation and air handling air change rates ducts and pressure drops charts and diagrams and more. Hart cooley llc.