24" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w8h8 Both lines taped together every

Both lines taped together every 18in for easier handling & installation

+ Product Details Size - 16"w X 12"h is the size for the duct opening measurement only

+ Product Details Size – 18" x 36" or 36" x 18" is the size for the duct opening measurement only

+ Product Details Compact and Secure Design - Measures 3-7/8" wide x 3-1/2" high x 3" deep

75"H – fits a 12" X 12" duct opening

24" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w8h8 Both lines taped together every+ Product Details Perfect Fit & Easy Sizing Designed for a 24" x 16" OR 16" x 24" duct opening (measured at the opening), with actual outer dimensions of 26. 5" W x 18. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 23. 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