Description
The BT Openreach Quadbox Duct Chamber 725mm x 255mm x 150mm is a compact access chamber system designed for use in telecom and utility networks. Its modular construction uses stackable 150mm deep twinwall plastic sections, allowing fast on-site installation without the need for heavy machinery.
This size is ideal for narrow trench applications, reinstatement projects, or access points with limited space. It provides full compatibility with Openreach ducting systems and has been approved for use in BT network builds. Its lightweight structure (under 6kg per section) allows for manual handling by a single person, reducing installation costs and improving site safety.
Despite its smaller footprint, the chamber still includes duct drilling guides for accurate entry spacing and can accept a range of compatible covers and accessories where required. It may also be fitted with drop-in brackets or steps, depending on installation depth and Openreach specifications.
The unit is typically installed on a compacted Type 1 or dry mix concrete base and backfilled according to Openreach guidelines. Its twinwall plastic construction resists environmental wear and allows for consistent installation quality in all weather conditions.
This chamber is suitable for compact network nodes, private duct infrastructure, or locations requiring unobtrusive access points within the BT / Openreach system.
Key Features
Dimensions: 725mm x 255mm per section
Modular Build: 150mm deep interlocking plastic units
Openreach Approved: Designed for BT Openreach network compatibility
Lightweight Design: Each section weighs approx. 5.8kg
Space Saving: Ideal for narrow trench and small-footprint installs
Specifications
Size: 725mm x 255mm x 150mm
Material: Twinwall polypropylene
Connection Type / Load Rating: Accepts B125-rated covers
Standard: Openreach Approved
Colour: Black
Applications
Used in BT Openreach telecom builds, reinstatement projects, narrow trench ducting, and compact fibre network installations. Perfect for chamber access in tight or restricted spaces.
Why Choose Stanley John LTD
Stanley John LTD is based in Newbury, Berkshire, supplying BT / Openreach-approved duct chambers and civil products across the UK. We are trusted for fast turnaround, reliable stock, and expert service.
Explore our full range of BT ducting, quad boxes, access chambers and accessories here:
https://stanleyjohn.com/product-category/bt-and-quadboxes/
Order Now
Order the BT Openreach Quadbox Duct Chamber 725mm x 255mm x 150mm today for fast, compliant underground access installs. Order online now from Stanley John LTD.
