30" x 16" or 16" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w16h16 875" width X 14" height

875" width X 14" height

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3 * insulation density is 30kgs/cbm = 0

+ Product Details Size - 36"w X 28"h is the size for the duct opening measurement only

[Outer Dimensions: 38

30" x 16" or 16" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w16h16 875" width X 14" height+ Product Details Perfect Fit & Easy Sizing Designed for a 30" x 16" OR 16" x 30" duct opening (measured at the opening), with actual outer dimensions of 32. 5" W x 18. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 29. 75" x 15. 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