28" x 34" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum Adjustable Curved Blade background: #f8f9fb

background: #f8f9fb

3/8" - 4223 PSI

Multi Angled Fan Pattern Fins For Multi Directional AIr Distribution Throughout The Entire Room

Noise free components - no vibrating louvers etc

28" x 34" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum Adjustable Curved Blade background: #f8f9fb+ Product Details Perfect Fit & Easy Sizing Designed for a 28" x 34" OR 34" x 28" duct opening (measured at the opening), with actual outer dimensions of 30. 5" W x 36. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 27. 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