Features & Benefits
Fast and Easy to Install
RapidSTACK™ chambers are significantly faster to install than conventional alternatives, with complete installations typically taking up to one hour. This results in reduced costs for the installer. Only the largest sizes in the range require specialist equipment or plant in order to install the chamber.
Sectional Design
Chambers are built to required depth by adding 150mm stackable sections that 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. For most applications, RapidSTACK doesn’t require specialist backfills, reducing installation costs.
Variability in Size
RapidSTACK can be used to create virtually any conceivable access chamber clear opening. RapidSTACK offers a huge range of chamber dimensions thanks to the number of standard sections and the variability offered by the system.
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.
Flat Pack Option
RapidSTACK chambers can be sent to site in ‘flat pack’ format, allowing for flexibility in delivery and installation.
Fire Retardant
Fire retardant to BS476 Part 7 Class 2. The GRP material has been tested in accordance with ISO 4589-2 Oxygen Index Test.
How It Works
RapidSTACK™ access chamber sections are 150mm deep, and are designed to stack together to achieve the desired depth.
Using pins, nuts and washers sections are connected at each corner, inter-linking one section to the other using the pre- drilled holes. Using 4 component parts to create each ring section these components are stacked to the depth required.
Materials
GRP
Glass Reinforced Polyester Resin (GRP), is a composite material, made of a polyester resin reinforced with glass fibres.

Available Sizes
Information on sizing
RapidSTACK™ clear opening sizes are created by combining a range of standard length straight pieces.
These straight lengths range in size from 450mm up to 2135mm and can be arranged to achieve a multitude of clear openings.

RapidSTACK+
Cubis' RapidSTACK+ solution offers a strong, resilient chamber system complete with composite cover, pre-drilled duct entry knock outs and removable central beam where necessary.
For further technical information on RapidSTACK+ visit our technical library.

Load Rating
RapidSTACK™ is suitable for installation in environments rated to D400 under EN124, in accordance with Cubis’ installation guidelines.
Suitable for carriageways of roads and areas open to commercial vehicles.

Options & Accessories
RapidSTACK™ can be supplied with the following accessories:

Base Sections
We extrude 100% recycled Low Density Polyethylene chamber bases to suit any chamber size. These are securely fitted to the bottom ring section of a chamber to provide a clean easy finish to the floor of the chamber.

X-TRAS™ Range
Using Cubis access chamber systems accessories can help save even more time. Our chamber options & accessories range allows installers to simply place, connect up tubes or ducts, backfill and walk away.

AX-S™ Covers
The Cubis AX-S™ range of access covers provide customers with a complete underground network access system as they are designed and manufactured from a range of materials to complement our chamber ranges.