16"W X 8"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 17.75"W X 9.75"H] Floor Grille Slots are angled to diversify

Slots are angled to diversify the airflow in 2 way direction

+ Product Details Size – 8" x 30" or 30" x 8" 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

+ Product Details Size - 36"w X 18"h is the size for the duct opening measurement only

16"W X 8"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 17.75"W X 9.75"H] Floor Grille Slots are angled to diversify+ Product Details Size 16"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 75" width X 9. 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 waxed.