White Plastic Perforated Tile/return with 1/2" Perforations (#4994w-125-50) non-corrosive Plastic Perforated Ceiling Tile & Return is the perfect ceiling air return for 2x2 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 Perforated panel lets return air and heat escape to the plenum. The item is made of durable ABS plastic and available in white and black 23-3/4" x 23-3/4" x .080" thick with .50" holes ( 1/2")