30" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Return Grille while the included installation screws

while the included installation screws make setup quick and hassle-free

actual front end outer dimensions are approximately 27 5/8" width X 20 5/8" height

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 22" or 22" x 10" duct opening (measured at the opening)

Actual Front End Outer Dimensions Are 34" Width X 10" Height - SEE IN DESCRIPTION HOW TO MEASURE A GRILLE

Designed for optimal airflow and lasting durability

30" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Return Grille while the included installation screws+ Product Details Perfect Fit & Easy Sizing Designed for a 30" x 10" OR 10" x 30" duct opening (measured at the opening), with actual outer dimensions of 32. 5" W x 12. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 29. 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