16" x 24" or 24" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w36h36 + Product Details Size –

+ Product Details Size – 14"w X 18"h is the size for the duct opening measurement only

Versatility and Durability: The red oak wood not only adds a touch of warmth and softness to your room but can also be sanded and refinished according to your specific application needs

Achieve the perfect airflow with adjustable control by rotating the middle disk

75"H – fits a 24" X 4" duct opening

10"w X 2"h Is The Size For The Duct Opening Measurement Only

16" x 24" or 24" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w36h36 + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 16" x 24" OR 24" X 16" duct opening (measured at the opening), with actual outer dimensions of 18. 5" W x 26. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 15. 75" x 21. 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