My builder framed the joist opening, but wouldn’t install. Feared liability. I installed myself. Only comment is that I wish I instructions had been more clear about necessary clearance for Antrieb mechanism. Telescoping ladders are great if you don't have much space to store a regular ladder. They can adjust https://atticstoragelifts31986.develop-blog.com/42607988/attic-lift-kit-eine-Übersicht