16" x 24" or 24" x 16" Cube Core Eggcrate Return Air Grille Aluminum Bar actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in

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

+ Product Details Perfect Fit & Easy Sizing - Designed for a 34" x 34" duct opening (measured at the opening)

The permanently attached eight-tumbler lock with a supplied key adds an extra layer of security

+ Product Details Size – 20" x 20" is the size for the duct opening measurement only

Actual Front End Outer Dimensions Are 16" Diameter

16" x 24" or 24" x 16" Cube Core Eggcrate Return Air Grille Aluminum Bar actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in actual front end outer dimensions are approximately 38 5 8" width X 26 5 8" height + Product Details Perfect Fit & Easy Sizing Designed for a 34" x 34" duct opening (measured at the opening)