36" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 14" Diameter Design – Removable face for

Design – Removable face for cleaning and access to damper - wooden damper for airflow shutoff control

actual front end outer dimensions are approximately 31 5/8" width X 24 5/8" height -

with actual outer dimensions of 22

actual front end outer dimensions are approximately 26 5/8" width X 10 5/8" height -

75"H – fits a 10" X 6" duct opening

36" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 14" Diameter Design – Removable face for+ Product Details Perfect Fit & Easy Sizing Designed for a 36" x 36" duct opening (measured at the opening), with actual outer dimensions of 38. 5" W x 38. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 35. 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 Made from