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STAKKAbox™ JMF is a range of modular and structural preformed access chamber systems available in 102, 104 and 106 sizes.

Designed for the telecommunication market the chamber system comes with a range of cable management and access accessories.

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Features & Benefits

Fast & Easy to Install

STAKKAbox™ chambers are significantly faster to install than conventional alternatives, with complete installations typically taking less than one hour. This results in reduced costs for the installer. No specialist equipment or plant is required in order to install the chamber and there is no need for specialist box builders

Sectional & Twin Wall Design

Chambers are built to required depth by adding 150mm sections. Due to the twinwall design, individual sections are light meaning they can be manually lifted. Each access chamber possesses vertical and horizontal ribs, resulting in a product that is strong vertically and on the sidewall. STAKKAbox™ JMF does not require specialist backfills, reducing installation costs.

Smooth Outer Walls with Lip to ‘Key In’

Gaps in the outer wall will negatively impact the effectiveness of compaction around the chamber. STAKKAbox™ chambers have smooth outer walls and an outer lip which keys into the backfill.

Flexible During Installation

Chambers can be adapted to suit on-site conditions with standard tools to overbuild over existing networks, Introduce duct entries for cable entry and for top-section fine adjustment.

Drop-in Furniture & Steps

Cable management and steps are fitted by dropping the accessories into pre-formed pockets. These allow accessories to be retrofitted after installation without mechanical fixing.

Meets Openreach Quality Requirements

Openreach checks all chambers against 13 step Quality Checklist for its brick, concrete and joint boxes. When using STAKKAbox™ JMF, this checklist is reduced to 8 checks.

‘NEW’ Ring Section Design

Pioneering chamber design that incorporates a custom textured tread pattern to increase mortar grip between the frame and chamber section, reducing lateral movement. Recessed locator grout bars provide a positive frame location, reducing frame movement.

All Weather Construction

Unlike with brick and concrete built chambers where freezing temperatures and heavy rain can stop work the JMF can be installed in all types of weather.

'NEW' JMF vs Quad

The new STAKKAbox™ JMF has been design and developed to provide an enhanced all round telecoms network access chamber system compared with the Quad box.

Its design has been specifically tailored to meet the requirements of installations teams installing the system within a wider range of environments.

For further information visit our FAQ Section.




STAKKAbox™ JMF is manufactured from High Density Polyethylene (HDPE) that possesses excellent strength to weight properties.


Available Sizes

STAKKAbox™ JMF is a  modular access chamber, available in three sizes; 102, 104 and 106.

All chambers are available with B125 access covers and Cubis' range of chamber accessories.

Download our product size guide for chambers in order to gain more information on available sizes.

Stakkabox JMF Content Available Sizes

Load Rating

STAKKAbox™ JMF is the ideal solution for installations in areas rated B125 under BS: EN124: 1994.

Stakkabox JMF Content Load Rating

Options & Accessories

STAKKAbox™ JMF can be supplied with the following accessories: