MaxxStep stair module, for rung ladders, width 356 mm. Supplied = assembled. Width = 356 mm. Weight = 0.45 kg. Product type = accessories for ladders. Widens the step surface to make standing more comfortable and less tiring. Turns rung ladders into a TRBS 2121 compliant workplace. Suitable for rung ladders made by Gnzburger Steigtechnik. The stricter version of TRBS 2121 Part 2 in force since early 2019 explicitly requires steps instead of rungs when ladders are not being used an ascent, but rather as a workplace. Does this mean you'll have to stop working on rung ladders? No The MaxxStep stair module, which can be fitted without tools, means almost all rung ladders made by Gnzburger Steigtechnik can be turned into a TRBS compliant workplace. Simply attach a suitable step to the required rung and fasten it in place using double clamp screws. The latter ensure the highest possible degree of stability and a safety mechanism ensures a fixed connection to the latest invention from Gnzburg