32" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Filter Grille Installation Location – Sidewall and

Installation Location – Sidewall and ceiling

+ Product Details Perfect Fit & Easy Sizing - Designed for a 28" x 8" OR 8" x 28" duct opening (measured at the opening)

+ Product Details Size – 16" x 20" or 20" x 16" is the size for the duct opening measurement only

actual front end outer dimensions are approximately 12 5/8" width X 20 5/8" height

Whether installed on a sidewall or ceiling

32" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Filter Grille Installation Location – Sidewall and+ Product Details Perfect Fit & Easy Sizing Designed for a 32" x 28" OR 28" x 32" duct opening (measured at the opening), with actual outer dimensions of 34. 5" W x 30. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 31. 75" x 27. 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