An exceptionally flexible reinforced aluminium flexible ducting construction from a multi-ply aluminium and polyester laminate supported by a high tensile steel wire helix. Available in plain and insulated types. Fire resistant: All 400 series products have been tested to and comply with requirements of BS476 Parts 6,7 and 20. Packaging: 10 metres in individual cartons. Note: We recommend the use of Tecfix banding or clips for clamping - providing a uniform pressure around the circumference of the duct. |