DIMENSIONS: * Posts: 1" diameter, Single piece construction. * Casters: 5 x 1 1/4" * Casters add 5 3/4" to the height of the unit. * Outside: Add 9/16" to listed dimensions. * Shelf Thickness: 1 1/4"ADDITIONAL PARTS: * Casters: Not included with shelving. (H-1205WH- Set of 4) Individual casters: Use H-1205WH-1 * Posts: Leveling feet included. (H-1205-FEET) * Shelves: Black supports included. (H-1205-SPRT)TEMPERATURE RANGE: -29 to 49 C (-20 to 120 F)MATERIAL: * Chrome-Plated carbon steel. * Casters are NSF certified.CAPACITY: * Shelf capacity listed is the capacity for each shelf without casters. * Total Starter Unit Capacity: 4,800 lbs * Total Add-on Unit Capacity: 3,000 lbs