30" x 16" or 16" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10" Round Duct Pipe 875" width X 14" height

875" width X 14" height

6" width X 13

+ Product Details Size – 32"w X 8"h is the size for the duct opening measurement only

this 4-way air vent diffuser allows you to precisely control airflow

30" x 16" or 16" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10" Round Duct Pipe 875" width X 14" height+ Product Details Perfect Fit & Easy Sizing Designed for a 30" x 16" OR 16" x 30" duct opening (measured at the opening), with actual outer dimensions of 32. 5" W x 18. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 29. 75" x 15. 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