PLATON HDPE MEMBRANE 1.13 x 15.2 6mm (1/4") DIMPLES Platon Membrane Rolls are 20m (65' 6") long Heights 3.05m, 2.44m, 2.21m, 2.07m, 1.98m, 1.8, 1.65m, 1.1 x 15.2m 10', 8', 7'3", 6'9-1/2", 6'6", 6', 5'5", 44-1/2" x 50' Minimum Sheet Thickness 24mil in the flat sections 21mil in the dimples Dimple Height 6mm (1/4")