Portable Office Trailers in All Sizes for All Industries. US Construction Trailers provide innovative and economical mobile solutions for portable office space for every type of client, from small. 1980's Mobile Office Trailer Single Wide @ 40.5' X 10' Front Large Room with Steel Steps and door. The bathroom still intact never used but the plumbing is there Rear Small room with Steel Steps and private entrance All Lights are still in the ceiling All light switches All doors are still intact and working Floor ok. To find out more about our mobile office units, give us a call today on 01582 486 663. To discuss any of our welfare units, please also get in touch, we are always happy to help! 3 sizes - 4 to 10 persons Our mobile office units come in a range of different sizes, see more below to discover which option is best for you. Office 12. 10' Office Container, Premium. The 10' (3 m) Premium Office Container is a very high-quality and long-term solution if you only need a small space. At about 7 m², the container provides an insulated, heated, well-lit, ready-to-use space solution to be used for monitoring purposes or as an office, for example. Condition: New. Offering the largest selection of trailers for sale in the nation, with on-site financing, service, repair, and parts. We sell every type of trailer: horse trailers, horse trailers with living quarters, dump trailers, utility trailers, car trailers, and more. 12800 Leonard Pkwy North Jackson, OH 44451 (800) 455-1001. Monday 8:30 - 7:00;.