Workman 17 or 22 Foot Multi-Configuration Ladder

A former listing:

https://tools.woot.com/forums/viewpost.aspx?postid=7068807&ref=cnt_odet_dsc

I’ve got one of these:
https://www.harborfreight.com/17-ft-type-1a-multi-task-ladder-67646.html

You can regularly get them for $100 with coupon.

These style ladders are pretty handy, but not light.