24" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Material_Aluminum + Product Details Size –

+ Product Details Size – 6" x 16" or 16" x 6" is the size for the duct opening measurement only

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10" x 4" Decorative Wood Air Vent HVAC Duct Cover Grille - Polished Finish Red Oak Wood - 2-Way Air Direction

75"H – fits a 18" X 12" duct opening

3/4" - 2981 PSI

24" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Material_Aluminum + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 24" x 36" OR 36" x 24" duct opening (measured at the opening), with actual outer dimensions of 26. 5" W x 38. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 23. 75" x 35. 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