16" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum Powder-Coated + Product Details Size -

+ Product Details Size - 32"w X 12"h is the size for the duct opening measurement only

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

+ Product Details Perfect Fit & Easy Sizing - Designed for a 12" x 20" or 20" x 12" duct opening (measured at the opening)

75" width X 5

+ Product Description Introducing our 18" Wooden Corner Baseboard Grille - a sophisticated addition to elevate your HVAC system and interior decor

16" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum Powder-Coated + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 16" x 16" duct opening (measured at the opening), with actual outer dimensions of 18. 5" W x 18. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 15. 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 Made from