18"W X 30"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 19.75"W X 31.75"H] Color_Aluminum Conveniently taped together as a

Conveniently taped together as a single piece

By means of the smooth surface

Each grille is securely shrink-wrapped with a cardboard backing to prevent damage during shipment

And is classified as Class 1 Fire Proof - B1

18"W X 30"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 19.75"W X 31.75"H] Color_Aluminum Conveniently taped together as a+ Product Details Size 18"w X 30"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 75" width X 31. 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