24" X 8" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 26 5/8" X 10 5/8"] ceiling actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in

actual front end outer dimensions are approximately 8

+ Product Details Size - 10"w X 18"h is the size for the duct opening measurement only

Experience uniform air distribution in every corner

actual front end outer dimensions are approximately 22 5/8" width X 20 5/8" height -

Actual Filter Size – 29 3/4"w x 15 3/4" x 1"

24" X 8" Steel Return Air Filter Grille for 1" Filter Fixed Hinged [Outer Dimensions: 26 5 8" X 10 5 8"] ceiling actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in actual front end outer dimensions are approximately 8 + Product Details Size 10"w X 18"h is the size for the duct opening measurement only