6" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 8.5" x 8.5"] Insulated Line actual front end outer dimensions

actual front end outer dimensions are approximately 30 5/8" width X 32 5/8" height

actual front end outer dimensions are approximately 30 5/8" width X 8 5/8" height

this 4-way air vent diffuser allows you to precisely control airflow

+ Product Details Size – 16"w X 25"h is the size for the duct opening measurement only

+ Product Details Size - 28"w X 4"h is the size for the duct opening measurement only

6" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 8.5" x 8.5"] Insulated Line actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 6" x 6" duct opening (measured at the opening), with actual outer dimensions of 8. 5" W x 8. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 5. 75" x 5. 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 strong,