16" x 22" or 22" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum Bar + Product Details Size -

+ Product Details Size - 4"w X 36"h is the size for the duct opening measurement only

Actual Filter Size – 19 3/4"w x 15 3/4" x 1"

Actual Filter Size – 11 3/4"w x 5 3/4" x 1"

Actual Filter Size – 25 3/4"w x 11 3/4" x 1"

Actual Filter Size – 11 3/4"w x 7 3/4" x 1"

16" x 22" or 22" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum Bar + Product Details Size -+ 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