BT QuadBox/StakkaBox JMF106 & JMF104

BT Inspection Chamber – QuadBox/StakkaBox JMF106 & JMF104

The BT QuadBox/StakkaBox JMF106 and JMF104 is a modular access chamber for telecoms and utility networks. Moulded in high-strength polypropylene, the StakkaBox sections are far lighter than concrete or brick-built chambers yet hold their shape below ground. Installers stack the sections to the required site depth, which reduces heavy lifting and speeds up the build.

Specifications

Key design features

The QuadBox / StakkaBox system uses modular stackable chamber sections to allow flexible chamber depth configuration on site. Manufactured from polypropylene, the chamber sections are lightweight for easier handling while maintaining durability for underground telecoms installations. Pre-formed duct entry positions also help simplify integration with cable ducting systems during installation.

Benefits

• Lightweight construction reduces handling and installation time.
• Modular design allows flexible chamber depth configuration.
• Suitable for telecoms and utility infrastructure projects.
• Helps reduce reliance on wet trades and heavy lifting equipment.
• Compatible with underground cable ducting installations.

Applications

The chamber gives secure underground access for telecoms, fibre and utility cabling on residential, commercial and civil projects. Pre-formed duct entries keep the cable runs tidy, and the access opening keeps inspection and maintenance straightforward.

Explore more

Browse the full range of duct access chambers, chamber covers, and underground ducting systems to complete your installation.

Contact us

For help selecting the correct QuadBox or StakkaBox chamber configuration for your project, contact the team for technical advice and UK wide supply.