16" x 24" or 24" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible With Duct 12in Actual Filter Size – 25

Actual Filter Size – 25 3/4"w x 31 3/4" x 1"

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Design – rigid gauge built for durability and long life in mind

16" x 24" or 24" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible With Duct 12in Actual Filter Size – 25+ Product Details Perfect Fit & Easy Sizing Designed for a 16" x 24" OR 24" X 16" duct opening (measured at the opening), with actual outer dimensions of 18. 5" W x 26. 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