10"W X 8"H [Duct Opening] Never Rust Plastic 2-Way-Vertical Air Supply Register - HVAC Vent Duct Grille - Off White [Outer Dimensions: 11.75"W X 9.75"H] 18" Diameter Elevate your air system today

Elevate your air system today and enjoy improved aesthetics and efficient airflow for a comfortable living environment

+ Product Details Size - 30"w X 34"h is the size for the duct opening measurement only

Actual Filter Size – 21 3/4"w x 29 3/4" x 1"

875" width X 6" height

For 12" Round Duct Opening - Spiral or Flex

10"W X 8"H [Duct Opening] Never Rust Plastic 2-Way-Vertical Air Supply Register - HVAC Vent Duct Grille - Off White [Outer Dimensions: 11.75"W X 9.75"H] 18" Diameter Elevate your air system today+ Product Details Size 10"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 75" width X 9. 75" height. Design Rigid gauge ABS plastic. Rigid gauge built for durability and long life in mind, but still light and handy. Powder coat finish. Smooth, scratch resistant, beautiful. Looks like new after years of use. Screws Included High Quality High quality ABS plastic will never rust, no sharp