6" X 12" or 12" X 6" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 7.75 X 13.75] 7in diameter + Product Details Size -

+ Product Details Size - 30"w X 14"h is the size for the duct opening measurement only

They seamlessly integrate into sheet rock plaster frame ceilings as well

8" X 8"h Is The Size For The Duct Opening Measurement Only

Never Rust Plastic 2-Way Vertical Air Supply Register

6" X 12" or 12" X 6" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 7.75 X 13.75] 7in diameter + Product Details Size -+ Product Details Size 6"w X 12"h or 12" x 6" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 7. 75" width X 14. 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