28" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10in diameter Scratch-Resistant

Scratch-Resistant

+ Product Details Perfect Fit & Easy Sizing - Designed for a 30" x 16" OR 16" x 30" duct opening (measured at the opening)

+ Product Details Size - 34"w X 4"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 36" x 12" OR 12" x 36" duct opening (measured at the opening)

actual front end outer dimensions are approximately 30 5/8" width X 18 5/8" height

28" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10in diameter Scratch-Resistant+ Product Details Perfect Fit & Easy Sizing Designed for a 28" x 10" OR 10" x 28" duct opening (measured at the opening), with actual outer dimensions of 30. 5" W x 12. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 27. 75" x 9. 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