Fabric Tent Structures or clear span structures, are temporary, semi-permanent buildings that can meet the needs of a long term installation. Fabric Structures are constructed with heavy duty aluminum beams that are ready to be assembled with no onsite fabrication. Clear span structures cost much less than traditional structures and buildings, and it will give you the ability to relocate the structure. Clear span structures work great for disaster relief, military, industrial and construction storage shelters. Celina's PROspan fabric structures are available in 3 beam configurations PROspan Model 122, PROspan Model 166, and PROspan Model 204.