36" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Grilles + Product Description This aluminum

+ Product Description This aluminum flex duct is intended to be used in heating

Actual Filter Size – 27 3/4"w x 5 3/4" x 1"

The grille features counter-sunk screw holes that prevent paint from peeling during installation

actual front end outer dimensions are approximately 16 5/8" width X 20 5/8" height

Aluminum Return Grille Spec Sheet

36" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Grilles + Product Description This aluminum+ Product Details Perfect Fit & Easy Sizing Designed for a 36" x 16" OR 16" x 36" duct opening (measured at the opening), with actual outer dimensions of 38. 5" W x 18. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 35. 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