It is hard to say. My cover seems to fit exactly. Is the cover a factory cover...does it say Sundance Spas imprinted on the front by the handle and have Sundance imprinted all over the underside? The reason I ask is the Cameo is the largest spa Sundance makes except for the Maxus which is much larger. If it is a Sundance cover (made by Ideal, BTW), it would seem to be the correct one.