Composed of 92-percent recycled rubber, QTrbm is a dimpled mat designed for use under gypsum or full weight concrete. QTrbm is available in four standard thicknesses ranging from 6 millimeter (mm) to 25 mm. Thicknesses are available in 6-17 mm and come in 54- inch-wide rolls. The 25 mm thickness comes in 48-inch-wide rolls. Also available with a waterproof membrane, QTrbm is ideal for use under full weight surfaces, such as gypsum concrete, and features quick and easy dry-laid installation. Supported by more than 400 independent laboratory and field tests, QTrbm outperforms cork, felt, plastic, and roofing membranes while meeting all established indoor air quality standards to make it one of the most effective and sustainable products available.