28" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Material_Steel + Product Details Size -

+ Product Details Size - 34"w X 16"h is the size for the duct opening measurement only

Actual Front End Outer Dimensions Are 8" Diameter

and keep the cold air out during the Winter Months

We are proud to have served over 5

Ideal for Walls & Ceilings: Designed for seamless installation in standard 16" X 6" duct openings

28" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Material_Steel + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 28" x 28" duct opening (measured at the opening), with actual outer dimensions of 30. 5" W x 30. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 29. 75" x 29. 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