When I could not find any replacement rung locks I made my own, from wood. They sit astride one rung and then any upper rung just sits on them. I weigh 250 lbs and have used these many times. Photo enclosed.
In the same predicament. Used two large C-clamps to hold rungs together as a quick fix.
12:01PM | 04/14/16
I have an old Kellar, model #3532. The rung locks, accoding to Werner, are obsolete.If someone has new oldstock, part # K-112-1,please contact me. [email protected] .The only other option I have is to purchase new rung locks & retrofit them to my ladder, any advice will be greatly appreciated