6" x 22" or 22" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 8.5" X 24.5"] w32h32 + Product Details Size –

+ Product Details Size – 30"w X 28"h is the size for the duct opening measurement only

75" Width X 19

Design – Easy unrestricted airflow for your HVAC system - 50° angled to provide maximum airflow

Effortless Integration: Crafted for easy connection to supply grilles of drop ceiling T-Bar vent covers

Upgrade to a new standard of air quality and aesthetics with our Aluminum Ceiling Diffuser

6" x 22" or 22" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 8.5" X 24.5"] w32h32 + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 6" x 22" or 22" x 6" duct opening (measured at the opening), with actual outer dimensions of 8. 5" W x 24. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 5. 75" x 21. 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