2015 salem cruise lite peeling sofa question

badly peeled sofa in bunkroom, 60" wide. There's a tag on top and bottom parts of sofa, one says e19 and the other says e28. I don't see any other identifying info, but these are zippered and appear to be removable/replaceable as they fit over the metal frame and foam insides. Anyone ever replaced these or know anything about the tag numbers? seems a cover designed for jack knifes would be much cheaper than a whole new sofa