14" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Insulated Line Set + Product Details Size -

+ Product Details Size - 24"w X 2"h is the size for the duct opening measurement only

+ Product Details Size - 26"w X 6"h is the size for the duct opening measurement only

+ Product Description Upgrade your HVAC system with our 4" Round Air Vent Supply Grille

Perfect for sidewall or ceiling installation

14" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Insulated Line Set + Product Details Size -+ 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