30" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter white Durable and Long-Lasting – Built

Durable and Long-Lasting – Built with high-impact clear plastic and premium materials for dependable performance

Size - 10"w X 10"h is the size for the duct opening measurement only

Actual Filter Size – 13 3/4"w x 19 3/4" x 1"

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+ Product Details Size - 22"w X 28"h is the size for the duct opening measurement only

30" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter white Durable and Long-Lasting – Built+ Product Details Perfect Fit & Easy Sizing Designed for a 30" x 28" OR 28" x 30" duct opening (measured at the opening), with actual outer dimensions of 32. 5" W x 30. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 29. 75" x 27. 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