Be careful, these steps are NOT a direct replacement for older Montanas. I just went through this 3 weeks ago. Our original steps cracked on our 2013 3625RE, and we thought new would be better than welding and painting. Unfortunately the new one was about 1/4 inch wider than original, even though they have the same nominal size. Keystone or Lippert poorly welded a bracket for the steps on the I frame, so it was a custom installation. We had to squeeze it in and use the lower set of square holes in the bracket, resulting in a larger rise for the top step than the others. We ended up returning it and welding/ painting the original stairs. So, try to get an exact measurement of original vs new before you spend $$ shipping 90 lbs and attempting an installation…my 2 cents.
Full-Timing since 2018 in a 2013 3625RE, 2023 Ford F450DRW with High Output Diesel,
Custom kingpin-mounted hitch receiver for bike rack 2019
MorRyde I/S with 8K Axles & Goodyear G114 Tires on 17.5” aluminum wheels 2020
FlexArmor roof 2021, Starlink