Tunnel Duct Ventilation Hoses

Tunnel duct ventilation hoses are used in low-pressure air transfer, ventilation and air conditioning lines. The hoses have PVC-coated fabric or blue polyethylene film walls and are externally reinforced with a galvanized steel spiral against abrasion. The group includes flame-retardant and antistatic models; their structure, compressible at ratios from 1:6 to 1:9, makes transport and storage easier.