Molded from mildew and UV resistant polyethylene, these storage bins will not rust, dent, chip corrode or even crack at freezing temperatures. USDA and FDA approved resins for non-toxic contact. Perfect for use in backyards, schools, parking lots, etc. to hold pool and patio equipment, sand, salt or ice-melt. The stainless steel hinged, lockable lids are tilted to shed rain and snow. HSB5-544has a flat bottom. HSB11-539and HSB20-540have molded pockets for forklifts. Optional dollies have 4 swivel casters. Dollies match the tub when ordered together or are Gray when ordered alone. Standard colors available are White, Yellow or Gray - please specify. Red or Blue available with 10-piece minimum order - please specify. FOB Shipping Point.