36" x 34" Cube Core Eggcrate Return Air Filter Grille for 1" Filter with filter actual front end outer dimensions

actual front end outer dimensions are approximately 23 5/8" width X 7 5/8" height

+ Product Details Perfect Fit & Easy Sizing - Designed for a 22" x 36" OR 36" x 22" duct opening (measured at the opening)

75" Width X 17

With precise measurements and easy installation

actual front end outer dimensions are approximately 27 5/8" width X 14 5/8" height

36" x 34" Cube Core Eggcrate Return Air Filter Grille for 1" Filter with filter actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 36" x 34" OR 34" x 36" duct opening (measured at the opening), with actual outer dimensions of 38. 5" W x 36. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 35. 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