Manufactured in High Density Polyethylene with high chemical resistance and impact resistance. Approved by many local authorities and utility sectors. Depth has increased from 250mm to 335mm (3 boxes per metre depth) with trepanned holes take all electricity and utility size duct eg 63mm, 90mm, 110mm, 120mm, 145mm and 160mm,
Easy to stack and install with wide internal flange within the chamber enables the frame to fit straight onto the box, therefore direct loading is transferred evenly. Very versatile and suitable for most ducting applications.