14" x 18" or 18" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w32h32 Customize effortlessly with a removable

Customize effortlessly with a removable face/door

+ Product Details Size – 20"w X 36"h is the size for the duct opening measurement only

+ Product Details Size – 14"w X 4"h is the size for the duct opening measurement only

14" x 6" Decorative Wood Air Vent HVAC Duct Cover Grille - Polished Finish Red Oak Wood - 2-Way Air Direction

Smooth Surface Edges - Run Your Fingers Across The Surface To Feel The Smoothness

14" x 18" or 18" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w32h32 Customize effortlessly with a removable+ 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