It is made of fire-resistant pvc fabric, temperature range -20-80 Ventilator shell: made of hot-dipped galvanized sheet which has spray painted Description -it is made of fire-resistant pvc fabric, temperature range -20-80â°c. -with the support of helix steel wire and black rubber strip, it is wear-and-tear proof. -it is characterized by its fire resistant, oleic acid proof. -flexible and light weight for easy use and installation. Rolls up for easy transportation and storage. -size: 300mm x 2m. Custom size are available upon request. Standard diameter:120mm-1500mm, standard length: 5m, 10m Portable ventilatior has been used to exhaust and supply flesh air into remote or deep operating zone, confined space construction and other bad air environment. Material 1. Ventilator shell: made of hot-dipped galvanized sheet which has spray painted automobile coating on its surface 2. Impeller: made of aluminum casting alloy. 3. Fan guard: dusting, zinc coating 4. Switch: press or push button. 5. Integrated plastic handle for easy carrying. 6. Motor: it is wrap around with international standard copper wire 7. With radiating rib aluminum casting integrated motor shell. Application of the flexible duct connected with portable ventilator Manhole , tunnel and tank Ship building , under-ground project
