36"W X 28"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 37.75"W X 29.75"H] w22h22 providing efficient performance of up

providing efficient performance of up to 300m3/h

+ Product Details Size – 36"w X 16"h is the size for the duct opening measurement only

High Quality – High-quality steel with counter-sunk screw holes (screws included) and no sharp edges

Actual Filter Size – 17 3/4"w x 17 3/4" x 1"

36"W X 28"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 37.75"W X 29.75"H] w22h22 providing efficient performance of up+ Product Details Size 36"w X 28"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 37. 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