28" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 14in diameter Installation Location – Sidewall or

Installation Location – Sidewall or ceiling

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 8" OR 8" x 20" duct opening (measured at the opening)

Carefully shrink wrapped with cardboard backing to prevent damage in shipment

actual front end outer dimensions are approximately 26 5/8" width X 8 5/8" height -

28" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 14in diameter Installation Location – Sidewall or+ 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