Reducers

Step duct sizes cleanly.

Concentric reducers to step between duct diameters without compromising route integrity or pull tension.

At a glance

Key features

Built for how it gets installed.

Reducers is one of the 9 cable types we carry across our Ducting range — chosen for the way you actually deploy.

Concentric reduction

Common UK duct sizes covered

UPVC and twin-wall compatible

DNO and telecoms approved

Why Altnets

300,000+ sqft of warehousing and 4,000+ pallet positions — same-week dispatch on most line items.

In-house technical team to validate specs, propose alternatives and de-risk your build before it ships.

Multi-vendor consolidation, phased deliveries and project staging built into every order.

Air, sea and road freight with full export documentation and flexible incoterms for global rollouts.

Applications

Mixed-diameter routes

Building entries

Tie-ins to legacy duct

Sub-duct take-offs

Have a question?

Tell us what you're building. We'll come back with a quote, lead times, and a plan.

More Ducting

Tried and tested carrier duct.