8" X 20" Or 20" X 8" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 9.75 X 21.75] RV Mobile Home + Product Details Size –

+ Product Details Size – 18" x 28" or 28" x 18" is the size for the duct opening measurement only

Whether you’re upgrading an existing HVAC system or embarking on a new project

+ Product Details Size - 16"w X 30"h is the size for the duct opening measurement only

Brand: HVAC Premium

Whether you're updating a single room or renovating an entire space

8" X 20" Or 20" X 8" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 9.75 X 21.75] RV Mobile Home + Product Details Size –+ Product Details Size 8"w X 20"h or 20" x 8" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 75" width X 21. 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