I have the one from gotvapes, and it does look like the one pictured. Cigtechs also has a "web tank DCT" which looks the same. I think the only difference between the two, other than the cigtechs one being much more expensive ($34.95 vs. $12.95) is the cigtech one can be completely disassembled (even the metal cage comes off the PP tube). The gotvapes one might come apart too, but I can't get the top or bottom cap off.
It takes cartos, so a protank head would definitely be incompatible.