
Marshall Tufflex 3MRB13BK Black Circular Branch (U) Conduit Box (2 Way) 25mm
3MRB13BK
Marshall Tufflex 3MRB13BK Circular Branch (U) Conduit Box – 2 Way, 25mm, Robust PVC for Reliable Cable Management
The Marshall Tufflex 3MRB13BK Circular Branch Conduit Box offers a durable and efficient solution for electrical installations, ideal for creating strong and secure junctions in surface conduit systems. Made from high-quality black PVC, it’s part of a trusted range from one of Britain’s leading cable management manufacturers.
- 2-Way U-Branch Configuration: Designed for 25mm conduit systems, offering reliable junction points in circular layouts.
- Strong PVC Construction: Made from robust black PVC for excellent durability in commercial and industrial applications.
- Precision Fixing Points: Fitted with M4 brass inserts and 50.8mm fixing centres for secure mounting and long-lasting performance.
- Plain Bored Design: Simplifies conduit entry and termination without threads for quicker installs.
- Compatible System Range: Integrates seamlessly with the wider Marshall Tufflex conduit and accessory range.
Technical Specification
- Material: PVC
- Colour: Black
- Entry Type: 2-way circular branch (U pattern)
- Conduit Size: 25mm
- Fixing Centres: 50.8mm with M4 brass inserts
✅ Choose the Marshall Tufflex 3MRB13BK for a reliable, professional-grade conduit solution built for lasting performance!

Ean Code | 5020837242096 |
Product | Round PVC Terminal Box |
Type | U |
Colour | Black |
Diameter | 25 mm |
Mounting | Surface |
Material | PVC-U |
Standards | BS 7671 BS EN 61386 |
Qualifier | 2-Way |
Ce Approved | N |
Fixings Included | N |
Nominal Width | 25 mm |
Included Fixings | N |
Delivery Options:
- PRIORITY DELIVERY – Next Working Day (All items in stock and ordered before 3 pm) - £7.08 inc-VAT. (£5.90 ex-VAT)
- Orders Over £100 (before VAT): We offer free standard shipping on all orders shipped to UK mainland addresses
- Orders under £100 (before VAT): Our standard delivery fee to UK mainland addresses is £5.90 ex-VAT (£7.08 inc-VAT)
*Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £12 ex-VAT for all orders (Prices subject to change).
Items requiring specialist shipping:
- Orders containing Solar Panels, Batteries and/or Inverters: Up to 50 qty will be dispatched on a pallet and incur a £120 ex-VAT delivery charge**.
**Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £180 ex-VAT (Prices subject to change).
Contact us if you have any further questions.