32" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w36h36 14"w X 8"h Is The Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

14"w X 8"h Is The Size For The Duct Opening Measurement Only

+ Product Details Size – 8"w X 20"h is the size for the duct opening measurement only

+ Product Details Size – 14" x 32" or 32" x 14" is the size for the duct opening measurement only

actual front end outer dimensions are approximately 36 5/8" width X 16 5/8" height

+ Product Details Size - 18"w X 20"h is the size for the duct opening measurement only

32" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w36h36 14"w X 8"h Is The Compatible With Duct 7in Applications This sheet metal DDAG A 1212 14"w X 8"h Is The Size For The Duct Opening Measurement Only + Product Details Size – 8"w X 20"h is the size for the duct opening measurement only