30"W X 10"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 31.75"W X 11.75"H] 18" Round Duct Pipe much more than the required

much more than the required 700 psi for r410

+ Product Details Size – 10" X 2" is the size for the duct opening (floor/vent hole) measurement only

How To Measure A Grille

flex-shrink: 0

+ Product Details Size - 30"w X 14"h is the size for the duct opening measurement only

30"W X 10"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 31.75"W X 11.75"H] 18" Round Duct Pipe much more than the required+ Product Details Size 30"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 31. 75" width X 11. 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