Yeah, everything is matching so far, somewhat. My manual says 27002-0036S for the filter cartridge. This site has that same number and references the model number of my DE filter too. But I'll probably call to make sure because the system 2 and system 3 difference.

http://www.poolsupplyworld.com/pools...7002-0036S.htm

The cartridge/filter itself however, reads these 4 numbers in this order on top. Which doesn't make any sense to me. :/
27002-0036
27002-0030
27002-0100
27002-0150