Mine would take quite a bit of force to get them to open after sitting for an extended time ... the glass really seals strongly to the trailer gasket.
Frameless windows. They look awesome. Functionality is absolutely terrible. Some RV brands are starting to migrate away from them back to the traditional style (e.g., Jayco's top-of-the-line Eagle and Eagle HT branded trailers) ... it turns out that many folks actually like air flow in their RVs.
Every time you use an apostrophe to make a word plural, a puppy dies.
TV: 2019 F-350 Lariat 4WD CCSB 6.7 PSD 3.55, 3,591 lb payload
Former RV: 2018 Rockwood Mini Lite 2504S
Former RV: 2007 Fleetwood/Coleman Utah
Former TV: 2005 F-150 King Ranch 4WD SCrew 5.4L Tow Package