Longitudinally variable ladder

A longitudinally variable ladder with at least two ladder parts which are displaceable relative to one another in their longitudinal direction, comprising

• ladder parts each including two longitudinal struts and rungs connected therebetween, a first of said ladder parts with first of said two longitudinal struts thereof forms a guide for second of said struts of a second of said ladder parts, said second struts constituting inner struts engaging between said first struts, and first of said rungs of said first ladder part being connected with said first struts on a front side of said first struts, the latter constituting outer struts and being disposed outside of said second struts,
• second of said rungs of said second ladder part being connected with said inner struts and lying between two planes, said two planes being defined by a front side and a rear side of said inner struts, respectively,
• guide rails being operatively connected to said outer struts,
• said struts of all said ladder parts have the same box-shaped profile,
• said inner struts being guided between at least two of said first rungs of said outer struts and said guide rails,
• said at least two first rungs being fastened on an upper end section of said outer struts, said second ladder part being withdrawable from said upper end section,
• said guide rails being limited to the end section carrying the two rungs,
• said guide rails at least indirectly engage on the rear side of said outer struts in said end section.