12" X 4" Mobile Home RV Floor Register Vent Grille with Back Dampers - Fixed Blades - 2 way Deflection - Brown Compatible with Duct 10" + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 18" x 6" OR 6" X 18" duct opening (measured at the opening)

+ Product Details Size - 30"w X 32"h is the size for the duct opening measurement only

Actual Filter Size – 23 3/4"w x 11 3/4" x 1"

+ Product Details Size – 22"w X 26"h is the size for the duct opening measurement only

12" X 4" Mobile Home RV Floor Register Vent Grille with Back Dampers - Fixed Blades - 2 way Deflection - Brown Compatible with Duct 10" + Product Details Perfect Fit+ Product Details Size 12"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 5" X 5. 5" wider. High Quality Extra Heavy Duty to withstand constant walk on situations. Installation Location Floor. Design Rigid gauge built for durability and long life in mind, but still light and handy. Powder Coat Finish Smooth, shiny, scratch resistant, beautiful. Looks like it was just waxed. Quality