Martinbuilt or something similar, theres quite a few like that. Ask David Martin or James Raines about maintenance, but typically its not any different from any disc style clutch. Spring height with those are higher than Bully style, that be a number i cant remember off top of my head.
With the red basket, might be Diablo as well. There are MANY different clutches out there that come in a variety of different colors that are all pretty much the same. (Gator, Viper, Touch, etc.)
Maintenance will be very similar to what Bully recommends as far as cleaning and air gap, etc. As Earl mentioned, disregard the spring heights that Bully recommends as they use a different length spring and retainer nut. Air gap is set with different thickness floater discs (or you can use shims - Bully shims will not fit.)
Also, be sure to index/mark your clutch before (and during) disassembly so you don't mix up the orientation and direction of each metal plate. This is critical, especially if you are not having the plates machined.