16" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_Red Oak Wood Actual Filter Size – 29

Actual Filter Size – 29 3/4"w x 31 3/4" x 1"

Whether installed on a sidewall or ceiling

designed to optimize your air distribution

featuring a sleek ½” fin design

16" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_Red Oak Wood Actual Filter Size – 29+ Product Details Perfect Fit & Easy Sizing Designed for a 16" x 12" OR 12" X 16" duct opening (measured at the opening), with actual outer dimensions of 18. 5" W x 14. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 15. 75" x 11. 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