How To Install Return Filter Grille

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Let'south start with understanding how and what the air grille is attaching to. Interior walls are mainly, if not all, framed with 2×4 material. Unlike exterior walls which have grown over the years to 2×6 to allow actress insulation. The wall stud spacing will vary from 12″ or sixteen″ depending on the age of the home and local edifice codes. A return air vent kicking volition be attached to the wall studs via tabs(ears), or direct to the wall stud.

Examples: Using a typical 6×x render air duct boot

i) Walls framed 12″ at center – the ductwork runs direct upwardly the middle of the wall then attaches securely via tabs on both sides. There should be minimal or no flex in the tabs when screwing the air grille on.

two) Walls framed 16″ on centre – the ductwork cradles the side of a wall stud, but so has a long tab on the other side. This type of installation is what could crusade thatspongy feeling when trying to fit the air grille screw on the tab side. As y'all can see the sheet metal is very thin, and the longer the tab, the more flex present.

Removing and Installing a Wall Return Air Grille

Step 1. Remove the original air return grille past unscrewing the fastener screws.

(i) Painted edges may be acting every bit a seal. Use a utility knife, razor blade, or like to cut effectually the perimeter.

Note: Wall repair may be needed if the new grille doesn't cover any cosmetic wall harm that may occur.

Cutting Painted Edges of a Wall Air Grille

Step 2. Measure the actual duct boot opening for authentic air grille size.

(i)Air grilles and annals covers are labeled by the duct boot opening size and not by outside diameter of the grille or annals.(two) You could also take the existing grille with yous to the shop and exercise a lucifer.

Footstep 3. Brand sure your louvers are effective

When installing the return air grille you want to brand sure yous take the louvers facing the right way to exist effective inpulling in air,and hiding the duct kicking backside for a ameliorate visual advent.

Note: The closer the grille location is tooeye levelthe easier to run across through the louvers even if the grille is installed properly.

NOTE: An easy way to empathise proper grille positioning is looking at the louvers and how they would pull air in the most efficient and effective way. Thewide mouth opening should face the ceiling when mounted high, and facing the floor when mounted low.

Render air grille mounted high near the ceiling: The top of each louvers should be closest to the grille face with the bottom of each louver slanted inward.

Wall Return Air Grille Position Near Ceiling

Return air grille mounted low almost the floor: The bottom of each louvers should be closest to the grille face with the top of each louver slanted in.

Air Grille Installation Repairs and Tips

The age of the grille, and brand of grille, can cause variations in size and screw hole placement when replacing an air grille.
If the existing mounting holes don't line up yous may accept enough room to create new holes by moving the grille up or down, but be careful that y'all are not too close to the existing holes and make one big hole.
If the air grille screw volition be screwing into a wall stud y'all're all-time off drilling a pilot hole first. The coating on the screws can easily be stripped off if the screw is torqued besides much. You lot can bank check this past borer or slight pushing on the interior side of the air boot to feel for a solid object. You may also be able to visible see a wall stud is present.
Be careful not to over-tighten and strip the air grille screws when screwing into the canvass metal tabs.
The air grille screw is not grabbing anything?(i) The canvas metallic pigsty is stripped.(ii) The duct kicking tab may have broken off.
Stripped spiral pigsty?(i) Effort a bigger diameter or longer screw. Your localhome comeback store will sell different variations with a painted finish. You tin can switch to a phillips pan head spiral instead of a hex head screw if that's all that is available with a painted head.(two) Try a plastic wall ballast and screw combination in the wall facia (drywall, plaster, etc.) for securing the air grille.