32" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 12in diameter + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 32" x 36" Or 36" x 32" duct opening (measured at the opening)

+ Product Details Size – 20"w X 14"h is the size for the duct opening measurement only

Actual Filter Size – 35 3/4"w x 33 3/4" x 1"

+ Product Details Size – 26"w X 6"h is the size for the duct opening measurement only

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32" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 12in diameter + Product Details Perfect Fit+ Product Details Perfect Fit & Easy Sizing Designed for a 32" x 22" OR 22" x 32" duct opening (measured at the opening), with actual outer dimensions of 34. 5" W x 24. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 31. 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