The Ledger is made of high strength aircraft aluminum. It is designed
to keep the window cleaner off the ladder, safely on terra firma. The reach in ability allows the squeegee to travel the full length of a second story inset window. The smaller sizes are excellent tools for the stacks of windows set in aluminum frames on so many commercial establishments and modern residents. The Ledger was designed especially for the old style Sorbo or 3x4 Soren channel, but works very well with Unger, Ettore or Pulex traditional metal channels. The Ledger will not work with the Sorbo channel with the rubber end plugs, or the Super channels made by Etorre, Unger and Pulex.