12" x 34" or 34" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Powder-Coated 75" Deep - Will Fit

75" Deep - Will Fit All Garrage Doors - Insulated And Non Insulated Garrage Doors [The Hole In The Door SHould Be: 15 ¼ x 9 ¾]

Actual Filter Size – 21 3/4"w x 15 3/4" x 1"

+ Product Description When it's time to upgrade your HVAC Vents in your house

+ Product Details Size – 24"w X 14"h is the size for the duct opening measurement only

10" x 8" Decorative Wood Air Vent HVAC Duct Cover Grille - Polished Finish Red Oak Wood - 2-Way Air Direction

12" x 34" or 34" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Powder-Coated 75" Deep - Will Fit+ Product Details Perfect Fit & Easy Sizing Designed for a 12" x 34" or 34" x 12" duct opening (measured at the opening), with actual outer dimensions of 14. 5" W x 36. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 11. 75" x 33. 75" x 1" Premium Airflow Efficiency High performance cube core eggcrate design allows 95% airflow efficiency, reducing energy costs and maximizing HVAC system lifespan. Durable, Rust Free Aluminum