14"W X 14"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 15.75"W X 15.75"H] Aluminum High Quality – Solid rigid 4 X 12 Is CRFG2028 Width_14in

High Quality – Solid rigid steel body for durability and reliability with dampers operable by switch for airflow directional control

+ Product Details Size - 28"w X 16"h is the size for the duct opening measurement only

Do not measure the overall size of the register itself

+ Product Spec Sheet

+ Product Details Size - 4"w X 36"h is the size for the duct opening measurement only

14"W X 14"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 15.75"W X 15.75"H] Aluminum High Quality – Solid rigid 4 X 12 Is CRFG2028 Width_14in High Quality – Solid rigid steel body for durability and reliability with dampers operable by switch for airflow directional control + Product Details Size 28"w X 16"h is the size for the duct opening measurement only