Nominal Size: 300mm x 300mm
Loading Class: B125 / 12.5T
Cover Material: Composite
Frame Material: Galvanised Steel
This 300mm x 300mm access cover & frame comes with a galvanised steel frame and a solid anti-slip composite top.
Specially designed to suit the metro 300mm x 300mm duct access chambers, this cover has a loading of B125. This can be used in areas with a vehicular traffic of up to 12.5 tonnes gross laden vehicle weight or 5 Tonnes slow moving wheel load. The wide flange external frame allows for a flush fit against the access box due to the deep seated galvanised steel frame. Additional features include integral lifting keyholes and locking capability.
Used by many local authorities and utility sectors, the metro duct system is quick and easy to install. Duct access chambers are designed to access underground cabling and pipe installations, such as cable drawpits, street lighting, CCTV, fibre optics, traffic signal applications. Used also for changing direction, these chambers are versatile and suitable for most ducting projects.
Manufactured in the UK by Naylor provides the installer with a reliable product that will perform. The installed chamber should have a C15/ST3 concrete base and surround, 150mm surround and 150mm base bedded on a 100mm Type 1 sub-base or concrete slab with a 50mm drain hole (base to be constructed first and have a smooth finish). The frame must be supported on the concrete surround of the chamber on a bed of mortar.