26" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Powder-Coated Actual Filter Size – 24

Actual Filter Size – 24 3/4"w x 9 3/4" x 1"

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+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 14" OR 14" x 20" duct opening (measured at the opening)

+ Product Details Size - 28"w X 34"h is the size for the duct opening measurement only

+ Product Details Size – 28"w X 34"h is the size for the duct opening measurement only

26" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Powder-Coated Actual Filter Size – 24+ Product Details Perfect Fit & Easy Sizing Designed for a 26" x 30" OR 30" x 26" duct opening (measured at the opening), with actual outer dimensions of 28. 5" W x 32. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 25. 75" x 29. 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