34" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter with filter Tool-Free Access for Easy Filter

Tool-Free Access for Easy Filter Changes - Features a user-friendly plastic latch that opens effortlessly without a screwdriver

+ Product Details Size - 36"w X 28"h is the size for the duct opening measurement only

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actual front end outer dimensions are approximately 22 5/8" width X 14 5/8" height

34" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter with filter Tool-Free Access for Easy Filter+ Product Details Perfect Fit & Easy Sizing Designed for a 34" x 28" Or 28" x 34" duct opening (measured at the opening), with actual outer dimensions of 36. 5" W x 30. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 33. 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