Questions and Answers for Seville Classics UltraDurable 4-Tier Commercial NSF certified Steel Wire Shelving System in Chrome (60 in. W x 72 in. H x 24 in. D)

A:  No, shelves can no be placed on poles upside down. They wouldn't fit over the slip sleeves properly

A:  Wire shelving units consist of 4 top/bottom poles

A:  There is no middle support, this unit consist of 4 top/bottom poles

A:  https://www.theshelvingstore.com/wire-shelving-accessories-s/452.htm

A:  https://www.theshelvingstore.com/wire-shelving-accessories-s/452.htm

A:  WEB571

A:  Shelves can be placed at any height on the poles

A:  Yes, the wired shelves come with 2 locking and 2 rolling wheels

A:  The wired shelves should not be left in moist environments

A:  Wired shelves come with both leveling feet and caster wheels

A:  Yes, all of the shelves are adjustable.

A:  The best lowest position for the bottom shelf is right below the joint point of the poles, mostly for stability.  You can assemble the shelf with as few as two shelves. (one at the top, the other somewhere below the screw joint of the poles)