Basic Mobile Facility Type B (BMFB)
This shelter is essentially the same as the Type A, but it is wired to operate on both 60 and 400 Hz power.

Side Opening Mobile Facility Type A (SOMFA)
This shelter is similar to the Basic Mobile Facility Type B except that it has provisions for two ECUs on one side and the other side is removable to permit complexing with either a Side Opening Mobile Facility Type B or a Side Opening Mobile Facility Type C.

Side Opening Mobile Facility Type B (SOMFB)
This shelter is similar to the Side Opening Mobile Facility Type A except that it has no end doors. It has a small personnel door located between the ECU opening on the non-removable side. This shelter is generally used in complexes with other side removable shelters.

Side Opening Mobile Facility Type C (SOMFC)
This shelter contains no power distribution or lighting, but it has two removable sides and a single end personnel door. It is generally used in complexes with other side removable shelters to provides increased workspace.

Integration Unit Mobile Facility (INU)
This shelter is used as a junction for up to 6 other MF units. It contains power distribution capabilities that allow it to transfer 200 Amp 60 Hz and 100 Amp 400 Hz power to the attached Mobile Facilities.