Product Overview

STAKKAbox™ ULTIMA offers a flexible access chamber system without compromising on strength. Due to its design and the material used, Glass Reinforced Polyester Resin (GRP), the ULTIMA chamber can be used anywhere where side wall loading is a concern, such as highways or railway tracks. Its range of accessories and access cover options makes it the most versatile solid ring chamber system that can meet F900 loadings.

Key Benefits

• Flexible access chamber system without compromising on strength.
• Ideal for areas with side wall loading concerns, including highways and railway tracks.
• Most versatile solid ring chamber system, able to meet F900 loadings.
• Ideal retrofit solution for existing networks, minimising site disruption and installation costs.
• Significantly faster to install than conventional alternatives, with complete installations typically taking up to one hour.
• Reduced costs for the installer due to fast installation.
• Chambers can be adapted to suit on-site conditions with standard tools.
• Overbuilds over existing networks, introduces duct entries for cable entry, and allows for top-section fine adjustment.
• Won't catch fire and has low smoke properties, making it suitable for enclosed areas such as tunnels and underground transport.
• Smooth outer walls and an outer lip which keys into the backfill, improving compaction effectiveness.
• Material is significantly lighter than other conventional materials providing the same inherent strength.
• Most 150mm deep sections fall under 25kg, suitable for single person lift under manual handling regulations.
• For most applications, ULTIMA doesn’t require specialist backfills, reducing installation costs.

Features & Construction

• Manufactured from Glass Reinforced Polyester Resin (GRP) material for long-lasting toughness, durability, and strength.
• Chambers are constructed by stacking 150mm deep ring sections to reach the desired height.
• Each ring section is castellated to positively interlock with the units above and below.
• Sectional and twin wall design.
• Possesses vertical and horizontal ribs, resulting in a product that is strong vertically and on the sidewall.
• ULTIMA chamber sizes have been designed to be reflective of the most commonly used access chamber sizes.

Technical Specifications

STAKKAbox™ ULTIMA chambers are available in a range of standard sizes. Depths are built by stacking 150mm sections to the desired height. Bespoke options are available upon contact for further details.

Installation & Maintenance

• Installation is significantly faster than conventional alternatives, typically taking up to one hour.
• Only the largest sizes require specialist equipment or plant for installation.
• Chambers can be adapted on-site with standard tools.
• No specialist backfills required for most applications.
• Designed as an ideal retrofit solution for existing networks.