Hiland HVD-SGTCV-M Heavy Duty Waterproof

2020: Fit perfectly, and I had high hopes when I first bought them in 2018. But two problems: 1. in order to get it over the heater which typically has a wing nut on the top you have to jump or climb up on something to lay it over the top. Because if you pull it you'll rip the top. This is very annoying and makes putting it on especially hard but even taking it off cumbersome. 2. Then the material rots so quickly in the sun that soon the inside of the top begins to pull apart. The plastic ceiling liner begins to drop off in messy pieces and offers no water protection to the top of the heater. Then the remaining cloth begins to tear when you put it on or take it off because it's rotted and it catches on the wing nut and the edges of the top of the heater. All in all it is a very crappy product. However it may be the only one that fits this heater so I have found no alternative but to keep buying them every year. That's very annoying! MY FIX: I cut a square out of the best part of the OLD covers (see pix) the size of the square "top" section, then glued these inside the top section of the NEW ones to give them 2 more layers of protection. I also replaced the wing nuts on the top of the heaters with regular nuts so nothing sticks up. HOPE THIS MEANS I DON'T HAVE TO BE NEW ONES FOR A FOURTH TIME NEXT YEAR!! APRIL 2022: On my THIRD SET! You might be saying, "What an idiot to keep buying a crappy product!?" Well maybe I am an idiot, but as I said in my review two years ago I don't know of any other product that fits my heaters. So once again, as shown in the most recent two photos, the covers have deteriorated terribly in the sun, despite the fix I described in my second review 2 years ago. The outside layer fades and apparently allows UV rays to attack the inside vinyl layer which then becomes brittle and falls apart. This year the top actually pulled away from the bottom as you can see in the photo. Once again, I don't understand why the company can't just use sun resistant fabric to protect the inner vinyl layer. I would be happy to pay an extra $10 or even $15 per cover to avoid having to replace them every two years.