Wire decking consists of wire mesh supported by metal supports and is intended to be load-bearing. The mesh is usually welded to the supports, but may be attached in other ways as well. In commercial and industrial applications, the wire mesh usually has a minimum wire gauge of 0.105 inches when round wire is used. The most common shelf size is 42 inches deep by 46 inches wide, while two such shelves placed side-by-side can usually be combined to allow for a single shelf of 8 feet wide. The weight capacity of a 42x46 shelf ranges from 2,000 to 3,500 pounds, while the decking itself weighs from 24 to 30 pounds. The finish on the steel may either be painted or sprayed on, or be electroplated with zinc. Electroplating is more common with Chinese manufacturers while painting or spraying is more common with American manufacturers.