12" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades with Damper Design – Circular return valves

Design – Circular return valves - designed to be used in low and medium pressure ventilation air conditioning systems

actual front end outer dimensions are approximately 16 5/8" width X 28 5/8" height

4" X 12" Brass Victorian Floor Register Grille - Modern Contempo Decorative Grate - HVAC Vent Duct Cover - Brass Plated

and a polished

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12" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades with Damper Design – Circular return valves+ Product Details Perfect Fit & Easy Sizing Designed for a 12" x 24" or 24" x 12" duct opening (measured at the opening), with actual outer dimensions of 14. 5" W x 26. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 11. 75" x 23. 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