10" x 28" or 28" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 12.5" X 30.5"] w18h18 Actual Front End Outer Dimensions

Actual Front End Outer Dimensions Are 26" Width X 8" Height - SEE IN DESCRIPTION HOW TO MEASURE A GRILLE

Experience noise-free airflow and a healthier environment thanks to our grille's innovative design

box or other attachments needed

Ideal for Walls & Ceilings: Designed for seamless installation in standard 14" X 12" duct openings

10" x 28" or 28" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 12.5" X 30.5"] w18h18 Actual Front End Outer Dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 10" x 28" or 28" x 10" duct opening (measured at the opening), with actual outer dimensions of 12. 5" W x 30. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 9. 75" x 27. 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