%20--%3e%3cdefs%3e%3cstyle%3e%20.st0%20{%20isolation:%20isolate;%20}%20.st1%20{%20fill:%20%23e0fd36;%20fill-rule:%20evenodd;%20}%20%3c/style%3e%3c/defs%3e%3cg%20id='Artboard_1'%20class='st0'%3e%3cg%20id='Altnets_logo_copy'%3e%3cpath%20class='st1'%20d='M603.6,445.35c0,21.03,11.78,30.29,29.87,30.29,6.52,0,14.19-.97,21.86-2.9v-110.46h-51.72v83.08h-.01ZM245.21,293.08l-50.27,125.14h100.12l-49.85-125.14h0ZM1434.08,395.51c-25.03-6.1-37.86-9.67-37.86-20.61,0-10.1,11.99-16.2,29.45-16.2,21.45,0,36.39,10.94,45.22,25.03l34.49-28.39c-14.51-21.87-39.96-42.07-80.98-42.07-43.96,0-78.87,24.4-78.87,62.26,0,41.43,31.13,55.53,75.3,65.41,24.61,5.47,35.33,9.25,35.33,19.98,0,11.36-12.62,17.67-28.81,17.67-20.4,0-41.01-12.2-53.21-31.13l-36.18,29.24c18.3,28.6,50.27,46.9,90.02,46.9,43.12,0,79.71-24.61,79.71-62.68,0-39.96-28.6-54.47-73.61-65.41h0ZM1039.09,313.27c-59.94,0-103.69,43.33-103.9,104.95,0,58.89,41.64,105.58,106.42,105.58,35.55,0,70.88-17.04,89.81-48.59l-38.28-28.6c-13.04,19.14-30.29,28.39-50.27,28.39-25.66,0-49.85-16.62-53.84-40.38h145.97c1.26-7.99,1.89-15.56,1.89-22.93,0-61.2-42.28-98.43-97.8-98.43h0ZM989.87,398.45c2.94-22.93,23.14-39.75,49.85-39.75s44.17,17.25,46.9,39.75h-96.75ZM1277.6,475.64c-18.09,0-29.87-9.25-29.87-30.29v-83.08h59.31v-44.8h-60.57v-64.78h-52.37v64.78h-34.28v44.8h34.07v90.86c0,47.53,29.87,70.46,74.24,70.46,16.41,0,36.39-4,48.8-10.1l-5.05-44.8c-11.36,4.63-24.19,6.94-34.28,6.94h0ZM0,522.62l655.33,257.78v-260.81c-10.1,2.52-21.37,4-31.32,4-44.38,0-74.25-22.93-74.25-70.46v-90.86h-34.07v-44.8h34.28v-64.78h52.37v64.78h52.99V0L0,257.78v264.84ZM424.4,223.25h53.84v296.14h-53.84V223.25ZM212.4,233.76h65.2l115.47,285.62h-60.57l-21.03-55.95h-132.51l-21.24,55.95h-60.57l115.26-285.62h0ZM820.34,313.27c-30.08,0-51.74,13.46-62.26,27.55l-1.05-23.35h-51.32v201.91h53.84v-112.95c0-27.97,21.03-43.12,44.8-43.12s41.85,15.14,41.85,43.12v112.95h53.84v-126.83c0-48.59-33.02-79.29-79.71-79.29h.01Z'/%3e%3c/g%3e%3c/g%3e%3c/svg%3e)
Enclosures
Splice closures, joint boxes and trackside cabinets.
Our enclosures range is selected for mass transit, energy & utilities environments. Held in UK stock, it is individually tested and supported by our technical team from specification through to install.
At a glance
| Specification | Value |
|---|---|
| Sector | Mass Transit, Energy & Utilities |
| Lead time | Stock — same week |
| Origin | UK warehoused |
| Support | Technical engineers in-house |
- UK WarehousedSame-week dispatch
- In-house engineersTechnical specs & support
- End-to-end BOM fulfilmentKitted, staged, delivered
- 120+ network buildersTrust Altnets to deliver
Key features
Engineered for real-world deployment.
Every line item in our enclosures range is chosen because it performs in the field.
Splice closures, joint boxes, trackside enclosures
12 to 576 splice capacity
IP66 / IP68 weatherproofing
Re-enterable seal systems
Enclosures types
Choose the right cable for the job.
We carry 3 core enclosures formats. Each fibre is engineered for a different deployment scenario.
Why Altnets
The clever choice for network builders.
Deep UK stock
300,000+ sqft of warehousing and 4,000+ pallet positions — same-week dispatch on most line items.
Engineers, not order-takers
In-house technical team to validate specs, propose alternatives and de-risk your build before it ships.
BOM, kitted & staged
Multi-vendor consolidation, phased deliveries and project staging built into every order.
UK & worldwide reach
Air, sea and road freight with full export documentation and flexible incoterms for global rollouts.
Applications
Deployed across the UK’s most demanding networks.
Mainline rail (NR / HS2)
Highways England schemes
DNO substations
Tunnel and metro systems
Have a question?
Let's get your network moving.
Tell us what you're building. We'll come back with a quote, lead times, and a plan.
- [email protected]
- +44 (0) 20 3997 8994
- Brighton · United Kingdom
More in Mass Transit, Energy & Utilities