custom mesh, basic textures u can modified easily,png 512 x 512
install it in gamedata, as in steam/steamapps/common/kerbal space program/gamedata
best used with lcars pluging or use hyperedit
update to v1.2, added lighting and a bit of color to lighting.
it is one of the biggest building in ksp i think.
bonus = added a freeware, ds9 middle part [ smaller]