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 specifically designed for the 45mm

specifically designed for the 45mm Ratcheting Tubing Cutter

+ Product Details Size – 8"w X 24"h or 24" x 8" is the size for the duct opening measurement only

+ Product Details Size - 24"w X 14"h X 2"d (for duct opening measurement only)

1 mm of PVC coating which can be installed on sidewall

continuous airflow

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 specifically designed for the 45mm+ 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