16" x 34" or 34" x 16" Cube Core Eggcrate Return Air Grille ceiling Ideal for Walls & Ceilings:

Ideal for Walls & Ceilings: Designed for seamless installation in standard 18" X 6" duct openings

actual front end outer dimensions are 32" width X 10" height

+ Product Details Perfect Fit & Easy Sizing - Designed for a 22" x 34" OR 34" x 22" duct opening (measured at the opening)

High Quality ABS Plastic - Will Last Forever & NEVER RUST

this 4-way air vent diffuser allows you to precisely control airflow

16" x 34" or 34" x 16" Cube Core Eggcrate Return Air Grille ceiling Ideal for Walls & Ceilings:+ Product Details Size 16" x 34" or 34" x 16" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 75" X 35. 75". High Quality High quality, rust free aluminum construction with smooth finished edges and counter sunk screw holes (screws included); no sharp edges.. Installation Location sidewall and ceiling. Design Cubic core eggcrate design Offers highest airflow efficiency at almost 95%, reducing