26" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 18in diameter Actual Filter Size – 7

Actual Filter Size – 7 3/4"w x 9 3/4" x 1"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 14" x 32" OR 32" X 14" duct opening (measured at the opening)

+ Product Details Perfect Fit & Easy Sizing - Designed for a 12" x 20" or 20" x 12" duct opening (measured at the opening)

+ Product Details Size – 30"w X 6"h is the size for the duct opening measurement only

+ Product Details Size – 26"w X 18"h is the size for the duct opening measurement only

26" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 18in diameter Actual Filter Size – 7+ Product Details Perfect Fit & Easy Sizing Designed for a 26" x 22" OR 22" x 26" duct opening (measured at the opening), with actual outer dimensions of 28. 5" W x 24. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 25. 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