Replacement Mattress

I wouldn't bother with a topper unless your budget is really restricted. If a standard size mattress (whether full or queen) will fit on your bed frame, than just buy a new mattress. We ended up doing that in our previous trailer, and with our new Winnebago, we just donated the stock mattress to the Salvation Army and purchased a new mattress at Sam's Club, where you can get a really nice mattress for around $500-$600. Because the bed frame in our Winnebago butts right up to the entertainment center wall, we replaced the short queen with a full size mattress. If you have the room for a full size queen (longer than a short queen), it just depends on whether your bed platform will support it, or whether you can do a modification to support a queen mattress.

Otherwise, many mattress stores can order a short queen mattress for you. It seems that it easier to do than it used to be, and prices have gone down.