26" x 6" or 6" x 26" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w20h20 R value rating of insulation

R value rating of insulation - r3

Actual Filter Size – 24 3/4"w x 25 3/4" x 1"

this diffuser ensures long-lasting durability and adds a touch of elegance to any space

with actual outer dimensions of 8

26" x 6" or 6" x 26" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w20h20 R value rating of insulation+ Product Details Perfect Fit & Easy Sizing Designed for a 26" x 6" OR 6" x 26" duct opening (measured at the opening), with actual outer dimensions of 28. 5" W x 8. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 25. 75" x 5. 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 Made