Hollow polycarbonate sheeting is an engineering plastic of excellent integration capability. Features: ... layer6) Flame resistance: rated class B17) Sound and heat proof8) Polycarbonate sheet is an engineering plastic of excellent integration capability. It has ... ): 0.9, 1.3, 1.5, 1.7,5) Colors: clear, lake blue, green, blue, opal, brown, silvery gray, redApplications:1 ...