48 x 96 smooth hdpe plate seller-HDPE sheets 4×8 manufacturer 48 x 96 recycled rigid polyethylene sheet export-HDPE Sheets Standard sheet size of 48" x 96" x 1" thick (160lbs) Durable over a wide temperature range; nsistent density and homogeneity; Used as medical and industrial neutron HDPEelding for more than 25 years.