Sorry for the delayed response, I've been camping for the past several days. I'll be honest, I don't know what the actual weight rating is for the ladder, but I can tell you that my wife and I have both been standing on the same rung (just to test it) and our combined weight is roughly 300lbs and there was no problem at all. If a single rung is able to support that weight then I'd have no question about the entire ladder supporting it. Also you have to figure that a 4 person tent is designed to have 4 people in it. If each person averaged 200lbs you're talking 800 lbs in the tent. Granted not all of that is supported solely by the ladder but the ladder should be capable of handling most reasonable loads.