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

+ Product Details Size - 30"w X 8"h is the size for the duct opening measurement only

Energy Efficient – Air-tight inner core decreases the pressure loss and provides a more hygienic environment - high energy efficient / No fiberglass erosion into air stream

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

Location – sidewall and ceiling

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