I have a sectional ladder like that one. Mine goes 33'. A little taller than they are supposed to go but I needed the extra height. Very light ladders. They do flex quite a bit though. For interior Windows nothiubeats a strip washer and squeegee. Streak free. I just completed a retirement community. 3 1/2 days. Exterior only. 3 stories main building and 20 cottages plus a 2 story memory care facility. That's was a big job. I do it yearly. I actually do all the retirement centers in my town. 4 of them.Whoa that's awesome. I'll take a look.