Return Air Filter Grille Sizes

Come with a metal frame designed to hold the grille and a standard 1” thick filter.
Return air filter grille sizes. 400 fpm is the median air speed for this calculation. Find your air return cover at an affordable price. Use the actual hole size and not the return air grille outside dimensions when ordering.
½ spaced fins set at 40°. A 10 x 20 air filter grille would have an outside dimension of 12 9/16 x 22 9/16. Our product is constructed to ensure maximum airflow and compliment your home decor.
The air grille and vent cover selection from grainger includes steel, metal and wood return air grilles and vent covers. 673 — steel return air filter grille, 1/2 fin spacing. A hole size of 10 x 20 would need a 10 x 20 filter grille.
Contact factory for sizes not listed. We are after the ability to move 980cfm so you now divide this number by 400 fpm yielding 2.45 or 2.5. Stamped steel return air filter grilles.
Affordable white return air cover. Return a return draws air into a return duct system with negative pressure compared to the space usually via a fixed “grille” but […] For ceiling or sidewall applications.
Attach to wall or ceiling. Return air filter grille specifications: This white grille is a stamped steel design, making this a sturdy choice for your air return needs.