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Ships within 48 hours · Estimated delivery Sep 7 - Sep 12
actual front end outer dimensions are approximately 26 5/8" width X 28 5/8" height
Universal Fit – Measures 3-7/8" wide x 3-1/2" high x 3" deep
See our separate listing of T-Bar Supply Grilles
actual front end outer dimensions are approximately 24 5/8" width X 8 5/8" height
28" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter return filter actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 28" x 12" OR 12" x 28" duct opening (measured at the opening), with actual outer dimensions of 30. 5" W x 14. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 27. 75" x 11. 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