Hi. I 'm new to the forum here and am hoping someone familiar with older Sundance tubs can help me out. I was given a 1990 Sundance Serenna which I have up and running. This is my first hot tub so I don't know much about them. My Question is from most of the pics I've seen of other Sundance tubs they have a removable lid directly over where the filter sits. This model doesn't. Here's some pics.
My question is if you look at the second picture you can see a "flapper" like this
and that's all that came with the tub. On this style tub, should it also have this
and are they meant to work together?
Thanks