Looking for a web site that describes "frameless windows" being touted as a plus in some RV's. Best I can determine is that they are double pane? What about opening mechanisms?
We have frame less dual pane windows on our Cedar Creek. The side slide windows are frame less as well and slide up to open. The other windows open at the bottom by standard scissor mechanism.
Besides looking great... it's a lot easier to inspect the exterior seals and re-caulk to help maintain a leak free rig.