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] 18" Diameter By simply measuring the width

By simply measuring the width or the length of the vent

+ Product Details Size - 10"w X 12"h is the size for the duct opening measurement only

+ Product Details Size - The listed 6" diameter refers specifically to the size of the duct opening

3/4" - 2981 PSI

Installation Location – Sidewall and ceiling

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] 18" Diameter By simply measuring the width+ Product Details Size 36"w X 34"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 37. 75" width X 35. 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