The Zarges D-Rung Combination Ladder can be used as a triple or double extension ladder and an ‘A’ frame ladder. Lockable ladder sections prevent collapsing during use. For added safety the ladders are fitted with anti-splay perlon straps. Comfortable D-shaped rungs and a stabiliser bar provide added stability. All sizes conform to EN131 professional standards, with a 150kg rating and a 10 year guarantee.