32" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Insulated Line actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in

actual front end outer dimensions are approximately 30 5/8" width X 38 5/8" height

+ Product Details Size - 10"w X 4"h is the size for the duct opening measurement only

Produced in accordance with ISO 9001-2008 Quality Management System

+ Product Details Perfect Fit & Easy Sizing - Designed for a 14" x 12" or 12" x 14" duct opening (measured at the opening)

Actual Filter Size – 11 3/4"w x 33 3/4" x 1"

32" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Insulated Line actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in actual front end outer dimensions are approximately 30 5 8" width X 38 5 8" height + Product Details Size 10"w X 4"h is the size for the duct opening measurement only