underlayment width:1.37m, 1.83m thickness:3mm,4mm,5mm,ect Laminated: Al foil,PE ,Non-woven dentisy:60-- underlayment width 1.37m 1.83m thickness 3mm-15mm density 60-150kg/m3 lamination PE side,PVC side,non-woven fabric side and Aluminum foil side package roll packing with plastic bags character anti-fouling and unaffected by moisture ,fire--retardant and noise reduction,impact resistant and ...