Insulated Aluminium Flexible Duct Insulated Aluminium Flexible Duct is available in diameters ranging from 80mm – 508mm. Prices stated are per boxed 10 metre length. The thermally insulated aluminium flexible ducting is compressed into the packaging, box size approx. 1.5m. Produced from multi-layer aluminium and polyester, strengthened with high tension hard steel spring wire, Surrounded with glass wool insulation and an aluminium vapour barrier. Can easily be cut to length, and no special tools are required for cutting or fixing. A male connection is required in order to fit the insulated aluminium flexible duct onto circular spiral ducting, secured using jubilee clips/quick release bands.
