28" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10" Diameter Easy clean Healthy air flow

Easy clean Healthy air flow for your HVAC system - noise free components

Tailored for Your Needs: Specifically suited for 24x24 lay-in diffusers

Actual Filter Size – 9 3/4"w x 21 3/4" x 1"

this solid-base guard ensures long-lasting performance with minimal hassle

28" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10" Diameter Easy clean Healthy air flow+ Product Details Perfect Fit & Easy Sizing Designed for a 28" x 36" OR 36" x 28" duct opening (measured at the opening), with actual outer dimensions of 30. 5" W x 38. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 27. 75" x 35. 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