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BT QuadBox/StakkaBox JMF106 & JMF104

Approved BT Inspection Chamber for use on BT Openreach networks

The QuadBox / StakkaBox is a modular robust pre-formed underground access chamber, designed for safe and efficient underground telecom and utility access.

Covers Sold Separately Here

Price range: £67.50 through £95.00

Product Code: QB915BASE

BT Inspection Chamber – QuadBox/StakkaBox JMF106 & JMF104

The BT QuadBox/StakkaBox JMF106 & JMF104 is a modular underground access chamber system engineered for modern telecoms and utility network installations. Crafted from high-strength polypropylene, this system offers a lightweight, robust alternative to traditional concrete or brick-built chambers without compromising on structural integrity below ground. Its modular, stackable design allows installers to adjust chamber depths on site, streamlining installation and significantly reducing manual handling requirements during infrastructure projects.

Specifications

Product type BT inspection chamber
Product range QuadBox / StakkaBox JMF106 & JMF104
Material High strength polypropylene
Available sizes 915 x 445 x 150mm, 1310 x 610 x 150mm
Product codes QB915, QB1310
Design Modular stackable chamber sections
Installation Lightweight modular assembly
Application Telecoms and utility infrastructure access

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

This BT chamber system provides secure underground access for telecoms, fibre, and utility networks across residential, commercial, and civil infrastructure projects. It is specifically designed to support efficient cable management, reliable inspection access, and straightforward ongoing maintenance.

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.

Additional information

Sizes

915 x 445 x 150mm, 1310 x 610 x 150mm