34" x 34" Cube Core Eggcrate Return Air Filter Grille for 1" Filter with filter + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 22" or 22" x 6" duct opening (measured at the opening)

actual front end outer dimensions are approximately 36 5/8" width X 24 5/8" height

Tough reinforced metallized polyester jacket - tear and puncture resistant

+ Product Details Size - 12"w X 20"h is the size for the duct opening measurement only

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34" x 34" Cube Core Eggcrate Return Air Filter Grille for 1" Filter with filter + Product Details Perfect Fit+ Product Details Perfect Fit & Easy Sizing Designed for a 34" x 34" duct opening (measured at the opening), with actual outer dimensions of 36. 5" W x 36. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 33. 75" x 33. 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