2'x2' Plastic Air Return with collar sizes from 6" to 20". Ideal for MRI Room, food prep, hospitals, high humidity areas and clean rooms.*Durable ABS material.
*Will not rust. *Easy to clean.
*Will not chip or bend (colorant molded into part).
*Resists sweating (reducing dust buildup).
*5.59 inches deep. *Filter not included.