Shop by Flex Size
Shop flexible ducting by diameter, from 80mm to 500mm. Each size page lists every type of flex we offer in that diameter — insulated aluminium foil flex, uninsulated aluminium foil flex, combi flex and PVC grey flex — so you can compare constructions and temperature ratings at the size you actually need.
Alpha Air Ventilation Supplies is a Leicester-based supplier of commercial and industrial ventilation equipment. Stocked items ordered before 3pm are dispatched for next-working-day delivery, and UK delivery is free on orders over £400 ex VAT.
Browse the complete range, organised by type, in the main flexible ducting category.
Showing 1–16 of 89 results
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Aluminium Foil Flex (Uninsulated) – 10m Long – 80mm Diameter
£8.47 + VAT Add to basket -
Aluminium Foil Flex (Insulated) – 10m Long – 80mm Diameter
£22.90 + VAT Add to basket -
Combi Flex (6m Length) – 80mm Diameter
£7.71 + VAT Add to basket -
Double Ply High Temp Silicone Flex (4m Length) – 80mm Diameter
£124.63 + VAT Add to basket -
PU Flexible Ducting. Anti-Static Lightweight – 80mm Diameter
£51.28 + VAT Add to basket -
PVC Grey Flex – 80mm Diameter
£18.90 + VAT Add to basket -
Aluminium Foil Flex (Uninsulated) – 10m Long – 100mm Diameter
£6.99 + VAT Add to basket -
Aluminium Foil Flex (Insulated) – 10m Long – 100mm Diameter
£20.74 + VAT Add to basket -
Combi Flex (6m Length) – 100mm Diameter
£8.16 + VAT Add to basket -
Double Ply High Temp Silicone Flex (4m Length) – 100mm Diameter
£146.88 + VAT Add to basket -
PU Flexible Ducting. Anti-Static Lightweight – 100mm Diameter
£53.78 + VAT Add to basket -
PVC Grey Flex – 100mm Diameter
£19.23 + VAT Add to basket -
Semi Rigid Flex (3m Long) – 100mm Diameter
£8.46 + VAT Add to basket -
Aluminium Foil Flex (Uninsulated) – 10m Long – 125mm Diameter
£8.64 + VAT Add to basket -
Aluminium Foil Flex (Insulated) – 10m Long – 125mm Diameter
£26.70 + VAT Add to basket -
Combi Flex (6m Length) – 125mm Diameter
£9.97 + VAT Add to basket