Wall mounted return air filter grille that accept 4" Thick Filter
Where can I find an array of different Manufactures that sell a Louvered Wall mounted return air filter grille that accept 4" or thicker pleated filter?
Seems I can find filter grilles for 1" thick filters everywhere, but I would like a 4".
My ruff opening dimensions are 25"w x 18"h however, I can modify. I was thinking a 25" x 16" x 4" Filter if I can find the correct intake grille.
Any help is appreciated.
Thanks in advance