4" X 20" Or 20" X 4" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 5.75 X 21.75] rg1010 + Product Details Size –

+ Product Details Size – 12" X 2" is the size for the duct opening (floor/vent hole) measurement only

3x Coupling Sockets

Drop Ceiling HVAC Supply Grille - For T-Bar Lay-In - 2 Coned - 24" x 24" - For 6" Vent Connection - Black

+ Product Details Size & Compatibility – 8" 90 Degree Flat Oval Elbow is compatible with duct 8"

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4" X 20" Or 20" X 4" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 5.75 X 21.75] rg1010 + Product Details Size –+ Product Details Size 4"w X 20"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 5. 75" width X 21. 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 wrapped