36"W X 36"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 37.75"W X 37.75"H] Insulated Line Set box-shadow: 0 2px 4px rgba(0

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

Each grille is carefully packaged with cardboard backing to prevent damage during shipment

you have 16 different varieties to choose from

+ Product Details Size - 20"w X 20"h is the size for the duct opening measurement only

36"W X 36"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 37.75"W X 37.75"H] Insulated Line Set box-shadow: 0 2px 4px rgba(0+ Product Details Size 36"w X 36"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 37. 75" width X 37. 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