20" x 12" Steel Return Air Filter Grill for 1" Filter Removable Face/Door Floor Grille + Product Details Size -

+ Product Details Size - 28"w X 10"h X 2"d (for duct opening measurement only)

+ Product Details Size - 24"w X 26"h is the size for the duct opening measurement only

Rigid Built For External Use– The sturdy and rigid design features noise free components that eliminates vibration and excess noise to the louvers

while the ingenious dial-controlled damper empowers you to effortlessly regulate airflow using your foot

20" x 12" Steel Return Air Filter Grill for 1" Filter Removable Face/Door Floor Grille + Product Details Size -+ Product Details Size 20"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 22 5 8" width X 14 5 8" height Actual Filter Size 19 3 4"w x 11 3 4" x 1" 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.