14" X 24" Or 24" X 14" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 15.75 X 25.75] Compatible with Duct 4" Easy Installation: Comes with mounting

Easy Installation: Comes with mounting screws for a secure fit in minutes

+ Product Details Perfect Fit & Easy Sizing - Designed for a 28" x 20" OR 20" x 28" duct opening (measured at the opening)

Easy Cutting – Offset and Spring Loaded design for easy

actual front end outer dimensions are approximately 18 5/8" width X 8 5/8" height -

25" Plenum Size 20x20 Filter Size to be used: 20x20x1

14" X 24" Or 24" X 14" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 15.75 X 25.75] Compatible with Duct 4" Easy Installation: Comes with mounting+ Product Details Size 14"w X 24"h or 24" x 14" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 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