HDT Airbeam Buildings are designed with air beams every 10', Inflate each beam with one simple valve and the entire structure is up. These buildings are primarily designed for Military and Commercial year around use, can be open on one or both ends, has doorways and window openings for air access.....these buildings will remain up year around and are designed for many years of maintainance free service....they take only minutes to erect, and take down. Perfect building for shops, warehouse, paint building, animals, garages, welding hut, etc. I have two , which can be built end to end for 22x66x12 total building. Easy to hang lights, fans, etc. These units are NEW, never used, and sell onsite for @ $11-15,000, with shipping extra. These units are stored in Williston, ND. and we will load them for you, each weighs @ 800# Please note, these are NOT cheap Chineese inflatables, they are US MILITARY NEW units. Call me with any questions, will negotiate if you buy both and might consider partial trades....thank you, Ken.