To answer the compatible question, go the Morryde site and complete the step qualifier. Those measurements dictate which model step. If you door is like mine, it is a ~26" door and uses a 4 step model. Our dog has no issue with these. I replaced the OEM steps with the TorkLift and they were OK and an improvement over the bouncing shallow steps that came with my camper. After using the Step Above a few times on our RV's here at the office, I installed the Step Above with strut assist about 18 months ago. Very pleased. We always kept an entrance rug inside the door with the old steps and anything that comes off these when folded up is caught there. Stowed them in the rain multiple times and have not noticed water inside the camper. Also added the Lippert Solid Step storage box when the old steps were removed. I went with the Lippert because of the bulb seal around the door and the preferred latch. I got mine from Tweetys.com and for some reason they sent the hand rail which is nice. I added the Morryde motion sensing lights last month and they work well. You will have to call Morryde as mentioned above for the bracket that works with our type of door but it is a quick bolt on. There are pros and cons to each of these types of steps. With these solid steps you must insure they are stowed when raising or lowering the camper or if in a tight storage spot they may fold out. Those were not issues for me personally.