steel building steel buildings kits quonset steel buildings STEEL BUILDING No matter what type of building you're looking for -- large, small, or in between -- Future Steel can offer you the most durable, customized steel building you'll find anywhere. We look forward to hearing from you! The A Style Future Steel Building offers a conventional appearance with its straightsides and peaked roof. It lends itself to a variety of uses, and is available in standard sizes that range, in two foot increments from 16' (4.87 m) to 32' (9.75 m) wide, with varying centre heights and unlimited lengths.