Old wooden two-section extendable ladders.
About 20ft when extended fully.
2 x 11'9" sections / 15 rungs.
Rung width (approx.):
Top section 9.5" / 24cm
Bottom section 12" / 30cm
Well used but should still last several more years.
I was given a new set of longer aluminium ladders so no longer need these.