I could not find any standard for hole spacing myself. And even in the same
line the spacing would be different from a two step to a three step. I used
the existing holes on one side but had to patch the other side and drill new
holes when I switched to a ladeer with more steps.

wrote in message
...
Has anyone replaced a Windline TDL-2X (two step) ladder with a TDL-3X
( three step), and if so, do the mounting holes match up. I can't get
one to compare without buying it first (online), and ruler measuring
is too iffy to be exact.
Thanks,
Helmer