Aluminium Flexible Duct Pipe 3.6mtrs

1.Flexible duct are produced from multi layer aluminum strengthened with high tension hard steel spring wire; 2.Aluminum insulated & Non-insulated Air Flexible Duct(single and double layer) 3.It has the advantage of no need to use special tools for cutting or fixing, it does not emit toxic gases in high temperature. 4.It is fire resistance