This is the Class-C version on ours. I figured the chassis was more Class-C sized than the A one.
I'm pretty sure its this one:
http://www.campingworld.com/shopping...23-to-26/44052
(Can't find any of the documentation for it.)
I find putting it on is pretty easy if you follow the directions: I lay it out on our lawn and turn it inside out. Then I pack it into the "sack" that it came with with the front on top. At the camper I pull it out of the sack as I climb the ladder pulling it up and over the front. With the cover inside out I just drop the sides down and climb back down the ladder.