As long as the 18'2" length you mentioned on your Palomini M-150RBS Camper is measured from front to back, but excluding the tongue (see attached image), I highly recommend the Adco SFS AquaShed Cover # 290-52240.
This durable cover is perfect for wet and snowy climates with its triple-layer SFS AquaShed top panel that immediately beads water on impact and triple-layer polypropylene side panels that breathe to eliminate the possibility of any mold/mildew build-up. The cinch ropes at the... view full answer...