16" x 22" or 22" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Insulated Line Set + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 8" OR 8" x 24" duct opening (measured at the opening)

+ Product Details Size - 6"w X 6"h X 2"d (for duct opening measurement only)

+ Product Details Size – 16"w X 18"h is the size for the duct opening measurement only

Actual Filter Size – 7 3/4"w x 35 3/4" x 1"

16" x 22" or 22" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Insulated Line Set + Product Details Perfect Fit+ Product Details Perfect Fit & Easy Sizing Designed for a 16" x 22" OR 22" X 16" duct opening (measured at the opening), with actual outer dimensions of 18. 5" W x 24. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 15. 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