16" X 18" or 18" x 16" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 17.75 X 19.75] Height_14in just push open and push

just push open and push close

+ Product Details Perfect Fit & Easy Sizing - Designed for a 26" x 28" OR 28" x 26" duct opening (measured at the opening)

75" Width X 17

+ Product Details Size - 28"w X 34"h X 2"d (for duct opening measurement only)

16" X 18" or 18" x 16" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 17.75 X 19.75] Height_14in just push open and push+ Product Details Size 16"w X 18"h or 18" x 16" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 75" width X 19. 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