Keystone RV Company (Keystone) is recalling certain model year 2014-2015 Keystone Avalanche recreational vehicles, model 355RK, manufactured from May 6, 2013, through April 24, 2014; model year 2015-2016 Keystone Alpine, models 3100RL, 3101RL, 3555RL, 3556RL, 3590RS, 3591RS, 3600RS, 3601RS, and 3730RS, manufactured from October 8, 2014, through July 28, 2015; and model year 2016 Keystone Laredo, models 325RL, 350FB, and 355RL, manufactured from July 13, 2015, through July 21, 2015. The affected vehicles may be equipped with a rear window that has a sticker labeling it as an emergency exit sticker. However, this window may be partially blocked by the rear ladder and was not intended to be a secondary emergency exit.