3/8", 8.0 lb. density rebond cushion. Recommended for use with Berber and loop pile carpets, can be used with any carpet style. FHA Class II, heavy traffic rating. Made from new foam trimmings, no post consumer scrap, PBDE free. Passes CRI Green Label requirements for air quality assurance. 6' W. x 45' L., 30 sq. yd. per roll.