24" X 24" Return Air Filter Grille - Filter Included - Easy Plastic Tabs for Removable Face/Door 18in diameter Its smooth

Its smooth

And The Cooler Air From Outside WIll Flow In From The Bottom

our bracket ensures guaranteed security with a robust crossbar and securely bolted L-shaped arms using high-grade 8

actual front end outer dimensions are approximately 26 5/8" width X 38 5/8" height -

24" X 24" Return Air Filter Grille - Filter Included - Easy Plastic Tabs for Removable Face/Door 18in diameter Its smooth+ Product Details Size 24"w X 24"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 25. 75" width X 25. 75" height Actual Filter Size 23 3 4"w x 23 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.