Rung sliding ladder made of GRP and aluminium. Tie bars made of glass-fibre reinforced rectangular tube profiles with a minimum ageing resistance of 10 years. Double-sided grooved square rungs measuring 30 x 30 mm. Four-fold grounded rung/stile connection. For sizes up to 2 x 12 rungs, there is simple height adjustment from rung to rung. For sizes from 2 x 14 rungs, convenient height adjustment is available from rung to rung by means of cable pull with automatically acting drop-in hooks. The ladder is corrosion-resistant, featuring corrosion-resistant guide fittings. Top ladders up to 3.0 m come with nivello ladder shoes. Rung spacing is 280 mm, and ladder width is 420 mm (without crossbar). The maximum load is 150 kg. Nivello ladder shoes include patented 2-axis tilting technology and are suitable for working near or on live parts. They have been tested up to 1000 V according to DIN EN 61478:2002 section 6.5.1 and A1:2004 category 1. Note: According to the standard, the attached extension ladder part cannot be separated from the ladder for lengths over 3.0 m. Note: Products with GRP parts are excluded from exchange due to their sensitivity.