ventilation duct

structure and character:

1.one part is pvc,and another part is special resistant high temperature.

2.the end of black duct is bellmouth and steel ring.

3.no air leakage

4.the color,length,thickness are arbitrary.

the blue part is made of coated cloth ,the yellow part is made of fire-retardant PVC material .The both ends with the black sleeve and the buckle and easily to connect due to flexible. Hose body transverse no juncture, Has no air leakage, Wear-resisting, Corrosion resistance, Antistatic, The wind drag small.it can used in special environment.