12" X 4" Mobile Home RV Floor Register Vent Grille with Back Dampers - Fixed Blades - 2 way Deflection - Brown Compatible with Duct 10" Ideal for Walls & Ceilings:

Ideal for Walls & Ceilings: Designed for seamless installation in standard 30" X 6" duct openings

+ Product Details Size - 10"w X 26"h is the size for the duct opening measurement only

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

actual front end outer dimensions are approximately 18 5/8" width X 30 5/8" height

75" Width X 11

12" X 4" Mobile Home RV Floor Register Vent Grille with Back Dampers - Fixed Blades - 2 way Deflection - Brown Compatible with Duct 10" Ideal for Walls & Ceilings:+ 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