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Concrete Junction Box

Concrete Junction Boxes (also known as J4 Junction Boxes, BT Boxes and Electric Junction Box) provide easy access for cable jointing and maintenance.

This reinforced concrete unit eliminates the need for on-site building.

“The quality of the products are never in question. We’ve always had good experiences working with Moore’s and are very satisfied with the overall service.”

Niall from M&P Supplies 


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Key Benefits of Concrete Junction Boxes

  • Reinforced walls
  • Polystyrene knock-out for variety of cable entry points
  • 100mm walls to enable chamber wall height to be raised with blockwork
  • 30mm diameter holes to facilitate lifting
  • Manufacturing with a built in BT channel helps to keep wires together in a safe and dry part of the box
BT J4 Junction Box - Moore Concrete
BT J4 Junction Box - Moore Concrete
J4 Junction Box (BT Box) Inside View On Site Moore Concrete

Want More Information?

For further information regarding BT Openreach and NIE Essentials please contact a member of our building sales team on 028 2565 2566, Ext 2. Delivery available throughout the UK & Ireland.

BT J4 Junction Boxes Applications

J4 Junction Boxes can be used for a variety of infrastructure projects including roads, housing developments, railways and  airports.

Mini Pillar Bases

Check out our Mini Pillar bases used in NIE contracts as a base for connection boxes.


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Public Service Essentials

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