30" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w24h24 Marked circles for cutout

Marked circles for cutout

+ Product Details Perfect Fit & Easy Sizing - Designed for a 14" x 28" OR 28" X 14" duct opening (measured at the opening)

Universal Fit – With dimensions of 4-1/8" wide x 7-1/16" high x 2-1/8"

10" x 4" Decorative Wood Air Vent HVAC Duct Cover Grille - Polished Finish Red Oak Wood - 2-Way Air Direction

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30" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w24h24 Marked circles for cutout+ Product Details Perfect Fit & Easy Sizing Designed for a 30" x 6" OR 6" x 30" duct opening (measured at the opening), with actual outer dimensions of 32. 5" W x 8. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 29. 75" x 5. 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 Made