24" X 10" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 26 5/8" X 12 5/8"] 8in diameter + Product Details Size -

+ Product Details Size - 28"w X 20"h is the size for the duct opening measurement only

+ Product Details Size – 3"w X 10"h is the size for the duct opening measurement only

Design – Cubic core eggcrate design Offers highest airflow efficiency at almost 95%

+ Product Details Size - 8"w X 6"h is the size for the duct opening measurement only

please note that the total outer dimensions of the grille measure 6" in diameter

24" X 10" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 26 5/8" X 12 5/8"] 8in diameter + Product Details Size -+ Product Details Size 24"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 26 5 8" width X 12 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