Ordered mine and they only delivered 2 twin packs had to get a refund I think it might have been a error however there was more than one supplier on Amazon selling at this price within a pound 4 overal
30 degree wash. You can wrap them if you like. Personally I don't worry about that.
From an Amazon review: We have an Intex hot tub and, as we didn't know if these would work only bought a single at first. These are fractionally taller than the Intex filters so need a little extra pressure to screw into the filter housing but once it work fine. In fact I prefer these, as they have a more open design which allows them to last longer than Intex before they need changing. Ordered the 12 pack this time and will be sticking with these from now on
Do you put them in an ordinary wash, what temp? Do you put them in a pillowcase or anything?