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Ships within 48 hours · Estimated delivery Sep 11 - Sep 16
actual front end outer dimensions are approximately 32 5/8" width X 16 5/8" height
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Ideal for Walls & Ceilings: Designed for seamless installation in standard 18" X 18" duct openings
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Actual Filter Size – 33 3/4"w x 23 3/4" x 1"
36" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter flat stamped steel actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 36" x 20" OR 20" x 36" duct opening (measured at the opening), with actual outer dimensions of 38. 5" W x 22. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 35. 75" x 19. 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
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