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POLYvault Access Chamber

POLYvault Access Chamber

POLYvault Access Chamber

Access Chambers

POLYvault™, from Cubis Systems, is a modular access chamber design suitable for foot-way installations and alongside rail tracks. The single wall design results in a very light product, despite its single piece construction.

How does it work? The POLYvault™ access chamber is significantly faster to install than conventional inspection chamber alternatives. Featuring drop-in covers and single wall design, POLYvault™ has a variety of features and sizes available to suit client needs. The system ranges in sizes from 470mm to 2440mm in a selection of depths and clear openings.

POLYvault Installation

Cubis’ POLYvault Installation

MONObox POLYvault Access Chambers

POLYvault ACCess chamber

Features & Benefits

Variability in Size

The POLYvault access chamber offers an extensive range in sizes to meet user requirements. Sizes range from 470mm clear openings to 2440mm in size, with aa range of concrete infill and composite covers available to compliment and complete the system.

All Weather Construction

Unlike brick-built chambers where freezing temperatures can lead to the halting of work, POLYvault™ can be installed in all types of weather.

Structure & design

Each access chamber possesses vertical and horizontal ribs, resulting in a product that is strong both vertically and on the sidewall. Due to the single wall design of the POLYvault™ access chamber, individual sections are light meaning that they can be manually lifted – materials are significantly lighter than conventional materials that can provide the same inherent strength.

Fast and Easy to Install

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, with no specialist equipment or plant required to install chambers.

Drop-in Covers

Access Chamber covers are ‘dropped’ in the inner-lip of the chamber and do not require a frame.

FLEXIBLE during installation

POLYvault™ access chambers can be adapted to suit on-site conditions with standard tools to build over existing networks.

POLYvault Access Chamber How It Works


How The cubis MONOBox Access chambers Work


See also | Access Covers | Cable Protection | Cable Trough


Materialspolyvault base

HDPE Access Chambers

MONObox™ POLYvault™ is manufactured in nitrogen-foamed High Density Polyethylene (HDPE), of which up to 70% is recycled material.

HDPE possesses excellent strength to weight properties.




polyvault side

Available Sizes

Information On Access Chamber Sizing

MONObox™ POLYvault™ offers an extensive range of approved and manufactured chambers available in a selection of depths and clear openings. The system ranges from 470mm clear openings to 2440mm in size.  A range of Concrete Infill and Composite covers are available to compliment and complete the system.






Load Rating

MONObox™ POLYvault™ is suitable for installation in environments rated to B125 under EN124.

Suitable for footways, pedestrian areas and comparable areas, car parks or parking decks.





Access Chamber polyvault

Technical Specification

polyvault Size


Product Code

610mm x 470mm 17.00 kg SYPV18-06100470-2418B000
610mm x 610mm 17.80 kg SYPV24-06100610-2418B000
910mm x 610mm 22.60 kg SYPV24-09100610-3618B000
910mm x 910mm 30.20 kg SYPV36-09100910-3618B000
1220mm x 610mm 33.00 kg SYPV24-12200610-4818B000
1220mm x 910mm 37.80 kg SYPV36-12200910-4818B000
1220mm x 1220mm 48.20 kg SYPV48-12201220-4818B000
1370mm x 610mm 33.00 kg SYPV24-13700610-5418B000
1530mm x 610mm 52.52 kg SYPV24-15300610-6018B000
1530mm x 910mm 37.80 kg SYPV36-15300910-6018B000
1530mm x 1220mm 48.20 kg SYPV48-15301220-6018B000
1530mm x 1530mm 48.20 kg SYPV60-15301530-6018B000

Cable Duct Sealing Systems

Protection of Cables Against Water Ingress (Flood), Gas Migration (Explosion) & Fire – see duct sealing systems for further information