... , good in fireproofing and insulatio Wiring Duct RoHSMaterial:Made from hard PVC, low halogen material, rigidity PVC, environment protecting, no pollution, no ... , 85degree of standing high temperature Struction: Made up of duct bottom and lidFeature: be made of bottom and cover, ... temperature of 70 degree.3,low thread hole, easy combination, take down simply, easy wiring,4,no thread hole and airproof, ...