Ceilume is a drop-ceiling tile that meets the Greenguard Environmental Institute's indoor air quality standards for low-emitting materials. The product's feather-light vinyl construction and nesting design uses 75 percent less raw material than conventional tiles, is five times more efficient to ship, and is 100-percent curbside recyclable. They have 57 styles to choose from, with tiles available in both 24-inch-by-24-inch and 24-inch-by-48-inch size. The ceiling tiles are available in white, black and translucent. These tiles can be used under sprinklers and with recessed lighting. They are stain resistant, water-resistant and dust free.