Used 2007 37-1/2' KEYSTONE MONTANA 3400RL for sale. There are four slide-outs. It hasn't traveled far but has been lived in over the years. Everything with the exception of the air conditioning is operational and was recently serviced by an RV service company. There is one broken window, missing awning and no decals on the exterior. The interior is in good shape and very roomy. It has two new RV/Marine batteries.