Upper section with clamping ring suitable for chamber systems LW 1000/800/600 for covers resistant to surface water, class A/B or D, with Lock & Lift, continuously height-adjustable by 514 mm (Comfort and engineering chamber system) or 400 mm (standard chamber system). If installed in roads, parking areas and comparable hard-surfaced traffic areas for trucks (Class D), the upper section must be underlaid on site with a reinforced supporting slab made of concrete. A standard formwork and reinforcement drawing can be provided. Access steps (art. no. 860109) must be installed if the allowable difference between the top of the chamber cover and the first step is exceeded. Minimum insertion depth: 80 mm (Comfort and engineering chamber system) or 94 mm (standard chamber system and cisterns).
