26" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Grilles Measuring 4" in diameter for

Measuring 4" in diameter for the duct opening

and Diffusers

During summer

Actual Filter Size – 33 3/4"w x 23 3/4" x 1"

+ Product Details Size - 6"w X 12"h is the size for the duct opening measurement only

26" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Grilles Measuring 4" in diameter for+ Product Details Perfect Fit & Easy Sizing Designed for a 26" x 22" OR 22" x 26" duct opening (measured at the opening), with actual outer dimensions of 28. 5" W x 24. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 25. 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