22" X 22" Plastic Access Panel Removable/Reversible Door With Frame For Concealed Wall / Ceiling Application - [Outer Dimensions: 24" Width X 24" Height] return grille + Product Details Size – 4 X 12 Is CRFG2028 Width_14in

+ Product Details Size – 8" x 30" or 30" x 8" is the size for the duct opening measurement only

75"H – fits a 18" X 4" duct opening

Example: If your hole is 14" wide by 14" tall

+ Product Details Durable Construction - Made with clear

actual front end outer dimensions are approximately 27 5/8" width X 27 5/8" height

22" X 22" Plastic Access Panel Removable Reversible Door With Frame For Concealed Wall Ceiling Application [Outer Dimensions: 24" Width X 24" Height] return grille + Product Details Size – 4 X 12 Is CRFG2028 Width_14in + Product Details Size – 8" x 30" or 30" x 8" is the size for the duct opening measurement only 75"H – fits a 18" X 4" duct opening