Mine did not come with the bracket I see on the web site.
The flanges where the bracket slides under are not high enough / the bracket on mine was too thick and I broke the flanges off.
I used some plastic epoxy to fill the gaps and hold the flanges back on to the rest of the tank. I put plastic wrap on the bracket before doing that so hopefully I can remove it in the future if needed.
I recommend for anyone who doesn't get a bracket and yours doesn't fit, to grind down where the flanges are so the bracket fits. (Grind the part of the bracket away from the tank side.) I also cut off the plastic ridges on the tank so the bracket would sit closer to the tank.
I wish a metal tank cap was available as a squirrel ate through my original.
Other than the above, the tank is essentially the same as the original.
If the bracket would have come with, installation would be less than an hour. For my plastic cutting, deciding how to repair, and the repair time, and mounting, over two hours.