Instructions / Assembly

Every cooling and heating system supplies air into the rooms using

ducts and these duct openings are covered by supply grilles. To

maintain the pressure all over the house, return air ducts are used that

recirculate the air or vent it outside. The return air openings are

covered by grilles that are called return air grilles. Return air filter

grilles allow a filter to be mounted inside them to trap particles and

germs thus cleaning the air. The filters often have MERV rating

depending on their ability to trap the particles and germs. The filters

need to be replaced regularly to ensure flow of clean air. Also, when

filters get dirty, it can affect the efficiency of the heating or cooling

system.

How to Install a Return Air Filter Grille

For replacement of filter grille (existing installation)

Step 1 – Sizing the return air filter grille.

The size of the hole is likely to be the same as the size of filters in the

filter grille that you plan to replace.

Alternatively or for new installation, measure the size of the hole in

the wall or ceiling to figure out the filter grille size. The back of the

filter grille frame slides into the hole; therefore, the size of hole needs

to be approximately the same size as the filter grille.

For example, in an approximately 16 inch x 25 inch hole size, the size of

the required filter grille is 16 inch x 25 inch. All Venti Air filter grilles are

described as width x height. Therefore, a 16 x 25 filter grille is 16 inches

wide and 25 inches high. In Venti filter grilles, the opening and closing

PAGE 1
Every cooling and heating system supplies air into the rooms using ducts and these duct openings are covered by supply grilles. To maintain the pressure all over the house, return air ducts are used that recirculate the air or vent it outside. The return air openings are covered by grilles that are called return air grilles. Return air filter grilles allow a filter to be mounted inside them to trap particles and germs thus cleaning the air.
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latch is always on the width side with one exception. Currently, the exception is that the 20 inch x 30 inch grille has latches on the 30 inch side instead of 20 inch wide side. Step 2 – The filter grille consists of two parts: frame and grille (face). On the wide side, the grille has latches on the top and take apart hinges at the bottom. Only the frame needs to be installed after removing the grille as they come packaged together.