8" x 34" or 34" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 10.5" X 36.5"] 18" Round Duct Pipe also called T-Bar systems

also called T-Bar systems

actual front end outer dimensions are approximately 30 5/8" width X 12 5/8" height

Engineered with precision and designed to perfection

75"H – fits a 10" X 10" duct opening

actual front end outer dimensions are approximately 34 5/8" width X 38 5/8" height

8" x 34" or 34" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 10.5" X 36.5"] 18" Round Duct Pipe also called T-Bar systems+ Product Details Perfect Fit & Easy Sizing Designed for a 8" x 34" or 34" x 8" duct opening (measured at the opening), with actual outer dimensions of 10. 5" W x 36. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 7. 75" x 33. 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