18" x 26" or 26" x 18" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Insulated Line (Screws included)

(Screws included)

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 12" or 12" x 6" duct opening (measured at the opening)

Actual Filter Size – 25 3/4"w x 17 3/4" x 1"

/* more vertical + left spacing */ } /* OPEN STATE */ #hvac-product-accordion

accordion-title { font-size: 17px

18" x 26" or 26" x 18" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Insulated Line (Screws included)+ Product Details Perfect Fit & Easy Sizing Designed for a 18" x 26" OR 26" x 18" duct opening (measured at the opening), with actual outer dimensions of 20. 5" W x 28. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 17. 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