7/16". 5.5 lb density standard rebond cushion. For installation with plush and frieze carpet styles. Soft comfort underfoot. FHA Class I, moderate traffic rating. Made from new foam trimmings, no post consumer scrap, PBDE free. Passed CRI Green Label requirements for air quality assurance. 6' W x 45' L, 30 sq yd per roll. Life of the carpet warranty.