Keystone RV Company (Keystone) is recalling certain model year 2013 Montana trailers, models 3100RL, 3150RL13, 3400RL, 3402RL, 3582RL, 3625RE, 3725RL, 3750FL, and 3900FB, manufactured November 12, 2012, to January 30, 2013, and 2014 Mountaineer trailers, models 331RLT, 356TBF and 375FLF, manufactured August 21, 2013, to September 18, 2013. In all models except the Mountaineer 375FLF, the rear windows are labeled with an exit sticker, but the rear window is not intended to be a secondary emergency exit. With the Mountaineer 375FLF, the rear window is intended as the secondary emergency exit, but it may be blocked by the rear ladder.