12"W X 20"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 13.75"W X 21.75"H] Black High Quality – High-quality rust-free

High Quality – High-quality rust-free

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

Its polished pre-finish gloss varnish not only adds to its appeal but also ensures easy installation

Operating temperature from -40°f to +248°f [-40°c to +120°c]

+ Product Details Size - 12"w X 14"h is the size for the duct opening measurement only

12"W X 20"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 13.75"W X 21.75"H] Black High Quality – High-quality rust-free+ Product Details Size 12"w X 20"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 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