... dust free and resistant to mold and mildew.Features:1. Low and stable Thermal conductivity2. High moisture&water ... measures: Temperature range: -183~+105°cWater vapor transmission: 1.16*10Thermal conductivity values: 0.036w/mkFire performance with BS ... wall thickness (normal)in(mm)1/4",3/8",1/2",3/4",1",1-1/4",1-1/2",2"(6,9,13, ... 19,25,32,40,50)inside diameterin(mm)1 ...