36" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 14" Diameter Designed for a 1" thick

Designed for a 1" thick filter

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

with actual outer dimensions of 22

and waste gases transmission lines

875" width X 22" height

36" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 14" Diameter Designed for a 1" thick+ 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