28" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades with Damper Crafted for durability and rust-resistance

Crafted for durability and rust-resistance

Full Control – Full 190 degrees control of air direction vertically & horizontally

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]

+ Product Details Size – 36"w X 10"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 22 5/8" width X 10 5/8" height

28" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades with Damper Crafted for durability and rust-resistance+ Product Details Perfect Fit & Easy Sizing Designed for a 28" x 36" OR 36" x 28" duct opening (measured at the opening), with actual outer dimensions of 30. 5" W x 38. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 27. 75" x 35. 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