28" x 26" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w30h30 Actual Filter Size – 31

Actual Filter Size – 31 3/4"w x 15 3/4" x 1"

Powder-Coat Finish – smooth

Design – Removable frame for easy filter change & cleaning - uses a 1" thick filter

Installation Location – Suitable for both sidewall and ceiling installation

provide precise damper control and superior air dispersion

28" x 26" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w30h30 Actual Filter Size – 31+ Product Details Perfect Fit & Easy Sizing Designed for a 28" x 26" OR 26" x 28" duct opening (measured at the opening), with actual outer dimensions of 30. 5" W x 28. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 27. 75" x 25. 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