20" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 6" Diameter 14"w X 8"h Is The

14"w X 8"h Is The Size For The Duct Opening Measurement Only

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

Design – Individually adjusting curved blades for better air flow control

+ Product Spec Sheet Floor Register Spec Sheet

+ Product Details Size – 22"w X 14"h is the size for the duct opening measurement only

20" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 6" Diameter 14"w X 8"h Is The+ Product Details Perfect Fit & Easy Sizing Designed for a 20" x 36" OR 36" x 20" duct opening (measured at the opening), with actual outer dimensions of 22. 5" W x 38. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 19. 75" x 35. 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