20" X 12" Or 12" X 20" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 21.75 X 13.75] 18in diameter + Product Details Size –

+ Product Details Size – 8"w X 28"h is the size for the duct opening measurement only

Save money on your utility bills by preventing heating or cooling wastage in vacant spaces

1 mm of PVC coating which can be installed on sidewall

+ Product Details Size - 6"w X 16"h is the size for the duct opening measurement only

We pride ourselves on offering top-of-the-line products that meet the highest standards

20" X 12" Or 12" X 20" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 21.75 X 13.75] 18in diameter + Product Details Size –+ Product Details Size 20"w X 12"h or 12" x 20" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 75" width X 13. 75" height. High Quality High grade steel construction meant for high foot traffic areas. Installation Location Floor. Design Easy drop in installation. Powder Coat Finish Smooth, shiny, scratch resistant, with no sharp edges. Looks like it was just waxed. Quality Packaging Carefully