14" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades with Damper Design – Unrestricted airflow for

Design – Unrestricted airflow for your HVAC system - adjustable one-way louver with full horizontal airflow directional control - single deflection supply grill with 96% airflow - noise free components - no vibrating louvers etc

actual front end outer dimensions are approximately 11

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only measure the "hole" in the wall/duct

14" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades with Damper Design – Unrestricted airflow for+ Product Details Perfect Fit & Easy Sizing Designed for a 14" x 30" OR 30" X 14" duct opening (measured at the opening), with actual outer dimensions of 16. 5" W x 32. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 13. 75" x 29. 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