A sump is a box, no need for a brand.
You can use an old scratched up tank, it can be bigger or smaller than your main tank, it can be a barrel. Anything that holds water, and anything you can fit your pump and other equipment in, can be a sump.I have have used old plastic barrels, old tanks, and I have even used my 1000 + gal pond as a sump for my outdoor 55 gallon tanks.
below you see the tank which flows by gravity into the pond, where the pump is, that sends water back to the tank.
I did this because the tank tended to overheat, but the pond water help maintain cooler temps.
Below a 55 gallon barrel as a sump
and below, an old scratched up 75 gal as a sump, offset from the tanks on its line ,(sumps don't need to be directly below the tank) some people with show tanks put sumps in the basement, a floor below the tank, to maintain cooler temps, and keep it out of sight, and to ease in maintaining out of a fancy room . You just need a stronger pump in that case.
I usually use pond pumps (Laguna) with a flow of at least 3000 GPH, because I run multiple tanks on each sump.