18" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Round Damper Ring 10" Circular Round Aluminum HVAC

10" Circular Round Aluminum HVAC Supply Grille Air Diffuser - With Butterfly Damper - Vent Duct Cover

+ Product Details Size – 2"w X 12"h is the size for the duct opening measurement only

Matching OBD dampers

Actual Filter Size – 31 3/4"w x 17 3/4" x 1"

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

18" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Round Damper Ring 10" Circular Round Aluminum HVAC+ Product Details Perfect Fit & Easy Sizing Designed for a 18" x 14" OR 14" X 18" duct opening (measured at the opening), with actual outer dimensions of 20. 5" W x 16. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 17. 75" x 13. 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