20"W X 26"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 21.75"W X 27.75"H] w6h6 + Product Details Size -

+ Product Details Size - 25"w X 8"h is the size for the duct opening measurement only

Foot Operated Opposed Blade Damper For Full Air Flow Control And Shutoff

875" height

+ Product Details Size – 4"w X 10"h is the size for the duct opening measurement only

this flex duct decreases the pressure loss and provides a more hygienic environment

20"W X 26"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 21.75"W X 27.75"H] w6h6 + Product Details Size -+ Product Details Size 20"w X 28"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 75" width X 29. 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