This concrete manhole adjusting unit is designed for use in drainage systems, allowing for the precise levelling of access covers and frames. Measuring 1050 x 65mm with a 675 x 675mm central opening, it replaces the use of engineering bricks to achieve the correct height adjustment for manhole openings.
Commonly used on site during manhole installations or refurbishments, this reinforced concrete unit is suitable where access covers require elevation or adjustment. It can be quickly installed by semi-skilled labour and helps minimise the number of joints in the structure, making it a practical solution for drainage contractors and civil engineering teams.
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