This non-corrosive Plastic Perforated Return is the perfect ceiling air return for 2’x2’ ceiling grid systems. In addition to being a functional component, the plastic air return also serves as a more aesthetically appealing ceiling air vent than an old, rusted metal returns or egg crate style return. The HVAC diffuser lets return air and heat escape to the plenum. The item is made of durable ABS plastic and available in white.