14" X 14" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 15.75 X 15.75] Ducting Components + Product Details Size -

+ Product Details Size - 34"w X 34"h is the size for the duct opening measurement only

Actual Filter Size – 11 3/4"w x 21 3/4" x 1"

+ Product Details Size – 25"w X 36"h is the size for the duct opening measurement only

Its dimensions

Designed to change the vertical direction of oval duct runs

14" X 14" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 15.75 X 15.75] Ducting Components + Product Details Size -+ Product Details Size 14"w X 14"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 75" width X 15. 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 shrink