[JRTJH]

Reading the OP's initial post, his question centers around the Arctic Package that's in the Springdale trailer line. Springdale is an entry level Keystone line and has never offered dual pane windows as standard equipment or as an optional feature. They simply aren't available in that trailer. He asks, "Anyone know how to tell for sure if its the arctic package and what all that includes? Also anyone have any experience with the Springdale in freezing temps?"

I owned a 2011 Springdale 242FWSS fifth wheel. There was no coroplast under the trailer. The floor consisted of poplar/whitewood 2x3 joists laid on 16" centers with a DARCO underliner, 2" of spun fiberglass insulation, the center run between the joists carried the aluminum floor heat ductwork and there was one 2" round duct from the furnace that went into the floor area immediately behind the fresh water tank. The gray tank (only one) and the black tank were exposed under the trailer and there was no heat to protect either of them. I installed 1" rigid foam sheeting under the trailer frame and covered that with coroplast. This significantly improved the insulation and was very noticeable with a significant increase in floor warmth during cool weather camping.

Honestly, with R-7 insulation in the walls, floor and ceiling of the Springdale line coupled with the extremely large single pane windows (one of the line's features is large windows to allow the light into the trailer and to make it seem "outdoors") the Springdale is really not much more than a "hardwall tent" when it comes to extremely cold weather camping. It's intended to be a "moderate weather trailer" and when you get beyond that, it doesn't perform well. Can you keep it warm inside? Yes, by using "gastly amounts of propane" and electric heat, but that's not really an affordable option for most people who are looking for an inexpensive camper that fits their limited budget. In other words, people on a budget who want to experience camping and don't have a lot of "spendable cash" to buy a Montana style $50K trailer.

Springdale is an OK trailer in the fringes of the season, but isn't designed, built or equipped for any temperatures much below freezing or over 100 for extended periods. You'll be find on cool nights but you'll probably only spend one trip with temperatures below 20F. That is, unless you've got some significant "arctic blood" in your system.