Companies Stand & work securely For our customers from trade and industry, ILLER-LEITER climbing devices are tools that offer them more: more safety more ergonomics more quality In short: more benefits that domestic and foreign professionals have relied on for almost 90 years. Added value in detail Our added value policy is clear in many details. Some examples: We install the rungs in almost all ladders with an inclination angle of 15 °. This is the only way to guarantee the highest level of security and ergonomic working during use. In addition to the classic flanging, we only use extruded profiles for aluminum spars. High-quality die-cast parts are predominantly used for the joints. Fastenings to wear parts are usually screwed. These can be exchanged in just a few simple steps. We give an availability guarantee of at least 10 years on all wear and spare parts. Special constructions As a medium-sized manufacturer, we react flexibly and with short decision-making paths to customer-specific requirements. Our team of development and production technicians is well versed in implementing customer requests. Safe ladders from safe production Safety not only enjoys top priority in the product portfolio, but also in production. In 2008, ILLER-LEITER was one of the first companies in Germany to be awarded the AGO seal of approval (occupational health and safety through organization) by the employers' liability insurance association. The basis for this is the company philosophy "Safe products from safe manufacturing". The MORE for trade and industry With its ILLER-LEITER brand program, Geis & Knoblauch GmbH & Co. KG is aimed exclusively at trade and industry through the specialist trade distribution channel. For us, loyalty to specialist retailers is not just an empty phrase in marketing, but a lived sales philosophy. A qualified field service team supports specialist dealers and users with technical and usage questions. You can reach your regional sales representative here. Guaranteed: Contact from person to person At our company headquarters in Buxheim im Allgäu, we attach great importance to optimal accessibility and reliable information. That is why you will not be directed to an anonymous call center or endless queues of service hotlines. Qualified ILLER-LEITER employees who know what they are talking about will advise you. Extremely high stock availability We have recognized that specialist dealers can no longer take over the warehouse function in every case. For this reason, we made a conscious decision to have almost 100% stock availability for our standard products. Our goal: to serve the specialist trade extremely quickly. Our own fleet of vehicles provides reliable services. Integrated into a Germany-wide network of forwarding agents, we guarantee high delivery quality within 24 to 48 hours. ILLER-LEITER history The Geis & Knoblauch company was founded in 1924 as the Buxheim wood goods factory at its current location. In addition to folding furniture, fire brigade accessories and wooden skis, the founders Engelbert Geis and Paul Knoblauch were already producing wooden ladders back then. Over the years, product development has focused on ladders and other climbing equipment. In the 1960s, the production of ladders made of galvanized steel began. At the end of this decade, the processing options for aluminum had advanced to such an extent that the first light metal ladders could be produced. Initially with the riveted stile-rung connections that were customary at the time. In the 1970s, ILLER-LEITER was able to bring crimped spar-rung connections to real series production. Their advantage: more stable, lighter, more cost-effective. Clever detailed solutions ILLER-LEITER strives to always optimize its access technology in the interests of the user. This creates detailed solutions that are beneficial, ergonomic and safe. We made the first wooden stepladder with wide ERGO rungs the 1st stepladder on both sides with tool tray the 1st staircase ladder in anodized design and we manufacture the only fixed roof ladder system that requires only one roof hook and is attached inexpensively. Products Aluminum ladders Step ladders rungs Telescopic ladders Multipurpose ladders Rungs of leaning and extension ladders Steps stepladders Steps leaning ladders Roof ladders Aluminum roof ladders equipment Wooden roof ladders Wooden ladders Step ladders rungs Rungs of leaning and extension ladders Steps stepladders Steps leaning ladders Kicks and trestles Pasting tables Pasting tables Plastic ladders Standing and extension ladders Special ladders Fruit tree ladders Glass cleaner ladders Special ladders and climbing equipment Climbing devices Tools, floorboards and trestles Platform ladders Industrial equipment Stair landing Industrial stairs with railings Step over, stationary or mobile Platform stairs, mobile Scaffolding Mobile scaffolding Folding scaffolding Fixed ladders Aluminum ladders Kicks and trestles Steps stepladders Step ladders rungs Multipurpose ladders Telescopic ladders Rungs of leaning and extension ladders Aluminum boxes Scaffolding Wooden ladders Companies service Training Collection warehouse VK support Pictograms Downloads Catalogs Assembly instructions Head exam Contact contact form Contact Person your way to us Home Terms and Conditions Imprint Data protection