26"W X 20"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 27.75"W X 21.75"H] RV Mobile Home + Product Details Size -

+ Product Details Size - 26"w X 6"h is the size for the duct opening measurement only

Complies with industry standards of USA: ASTM D-882

+ Product Details High Quality - Aluminum housing on the outside and on the inside for the best insulation value

+ Product Details Size - 30"w X 18"h is the size for the duct opening measurement only

26"W X 20"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 27.75"W X 21.75"H] RV Mobile Home + Product Details Size -+ Product Details Size 26"w X 20"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 27. 75" width X 21. 75" height. Design Easy unrestricted airflow for your HVAC system 50 angled to provide maximum airflow. High Quality Solid stamped steel with counter sunk screw holes (screws included) and no sharp edges. Powder Coat Finish Smooth, shiny, scratch resistant, beautiful. Looks like it was just