36" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Width_20in actual front end outer dimensions

actual front end outer dimensions are approximately 16 5/8" width X 26 5/8" height -

Discover the perfect balance of style and functionality with our Ceiling Grille Diffuser

75"H – fits a 12" X 4" duct opening

Actual Filter Size – 11 3/4"w x 21 3/4" x 1"

Filter grille features a user-friendly plastic latch that requires no screwdriver for opening

36" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Width_20in actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 36" x 22" OR 22" x 36" duct opening (measured at the opening), with actual outer dimensions of 38. 5" W x 24. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 35. 75" x 21. 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