12" X 24" or 24" x 12" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 13.75 X 25.75] Galvanized Steel rotate it to align with

rotate it to align with the square frame

Ideal for straight-line transitions

+ Product Details Size – 8"w X 20"h or 20" x 8" is the size for the duct opening measurement only

+ Product Details Size – 28"w X 16"h is the size for the duct opening measurement only

+ Product Details Size – Stick-on collar is 16" and it is compatible with duct 16"

12" X 24" or 24" x 12" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 13.75 X 25.75] Galvanized Steel rotate it to align with+ Product Details Size 12"w X 24"h or 24" x 12" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 75" width X 25. 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