20" X 36" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 22 5/8" X 38 5/8"] w26h26 And Meets/Beats ASTM B280 Standard

And Meets/Beats ASTM B280 Standard

+ Product Details Size - 8"w X 24"h is the size for the duct opening measurement only

+ Product Details Size - 8"w X 36"h is the size for the duct opening measurement only

+ Product Details Size – 10"w X 24"h is the size for the duct opening measurement only

thanks to counter-sunk screw holes and included screws

20" X 36" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 22 5/8" X 38 5/8"] w26h26 And Meets/Beats ASTM B280 Standard+ Product Details Size 20"w X 36"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 22 5 8" width X 38 5 8" height High Quality high quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Installation Location sidewall and ceiling Design removable door face for easy filter change & cleaning uses a 1" thick filter. Our filter grille latch is easy to use on