22" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_Red Oak Wood Ideal for Walls & Ceilings:

Ideal for Walls & Ceilings: Designed for seamless installation in standard 10" X 8" duct openings

+ Product Details Size - 24"w X 18"h X 2"d (for duct opening measurement only)

Design – Equipped with lever for full airflow control

the actual front end outer dimensions are 10" in diameter

22" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_Red Oak Wood Ideal for Walls & Ceilings:+ Product Details Perfect Fit & Easy Sizing Designed for a 22" x 14" OR 14" x 22" duct opening (measured at the opening), with actual outer dimensions of 24. 5" W x 16. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 21. 75" x 13. 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