He also discusses insulation - Units can be positioned end to end or side to side for larger space requirements They are an option for a lighter weight all-purpose structure So I bought theigh 30 foot wide x 40 foot long x 15 foot high with 12 x 12 foot overhead door and one service door frame 30 foot wide x 40 foot long x 15 foot high with 12 x 12 foot overhead door and one service door