36"W X 34"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 37.75"W X 35.75"H] w26h26 actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in

actual front end outer dimensions are approximately 22 5/8" width X 38 5/8" height -

Design – Cubic core eggcrate design Offers highest airflow efficiency at almost 95%

+ Product Details Size – 30"w X 6"h is the size for the duct opening measurement only

+ Product Description Introducing HVAC Premium's Aluminum Adjustable Return Grill – the key to enhanced air control and energy efficiency

+ Product Details Size – 30"w X 20"h is the size for the duct opening measurement only

36"W X 34"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 37.75"W X 35.75"H] w26h26 actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in actual front end outer dimensions are approximately 22 5 8" width X 38 5 8" height Design – Cubic core eggcrate design Offers highest airflow efficiency at almost 95%