NSF® listed for use in all environments, including humid areas. Heavy duty wire construction. Bright epoxy plated finish to reduce dust and dirt accumulation. Various sizes to mix and match to suit any need. Easy to assemble, no tools required. Includes 4 sleeve clips per shelf. Capacity: under 48" length, up to 850 lbs per shelf; over 48" in length, up to 600 lbs per shelf.