26" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 3-Way or 4-Way Incorporated with Integral Butterfly Damper

Incorporated with Integral Butterfly Damper for full Airflow Control

the second number represents the height

This grill comes in four different designs

+ Product Details Size – 25"w X 24"h is the size for the duct opening measurement only

+ Product Details Size - 8"w X 36"h is the size for the duct opening measurement only

26" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 3-Way or 4-Way Incorporated with Integral Butterfly Damper+ Product Details Perfect Fit & Easy Sizing Designed for a 26" x 28" OR 28" x 26" duct opening (measured at the opening), with actual outer dimensions of 28. 5" W x 30. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 25. 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