28" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum Adjustable Curved Blade 75"H – fits a 16"

75"H – fits a 16" X 8" duct opening

Crafted from high-quality aluminum

+ Product Details Size – 18"w X 22"h is the size for the duct opening measurement only

font-weight: 500

Built-In Locking System – Comes with a permanently attached eight-tumbler lock and a supplied key for added security

28" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum Adjustable Curved Blade 75"H – fits a 16"+ Product Details Perfect Fit & Easy Sizing Designed for a 28" x 32" OR 32" x 28" duct opening (measured at the opening), with actual outer dimensions of 30. 5" W x 34. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 27. 75" x 31. 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