BUS-20 is available in Surface or Hanging configurations. Unlike track, BUS-20 is listed under Article 368 of the NEC, which makes it much more flexible than track, and allows Litelab to modify it in ways unavailable to other manufacturers. With 100 lbs loading capacity between hanging points and an integrated unistrut mounting profile, BUS-20 can provide power, lighting and structural infrastructures. Available with fully integrated LED Emergency fixture.