14" x 18" or 18" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible With Duct 8in 10"w X 2"h Is The

10"w X 2"h Is The Size For The Duct Opening Measurement Only

Durable and Long-Lasting – Built with high-impact clear plastic and premium materials for dependable performance

actual front end outer dimensions are 31

Constructed from high-impact

this filter grille never rusts and withstands long-term use in any environment

14" x 18" or 18" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible With Duct 8in 10"w X 2"h Is The+ Product Details Perfect Fit & Easy Sizing Designed for a 14" x 18" OR 18" X 14" duct opening (measured at the opening), with actual outer dimensions of 16. 5" W x 20. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 13. 75" x 17. 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