24" x 18" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Adjustable Return High Quality – Polished pre-finish

High Quality – Polished pre-finish gloss varnish ready to install - can also be sanded and re-finished according to application needs

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High Quality Copper Coil Meets/Beats ASTM B280 Standard for Air Conditioning and Refrigeration (Made From C12200 - 99

Actual Filter Size – 13 3/4"w x 24 3/4" x 1"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 26" OR 26" x 24" duct opening (measured at the opening)

24" x 18" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Adjustable Return High Quality – Polished pre-finish+ Product Details Perfect Fit & Easy Sizing Designed for a 24" x 18" OR 18" x 24" duct opening (measured at the opening), with actual outer dimensions of 26. 5" W x 20. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 23. 75" x 17. 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