These large storage utility bins are designed with heavy-duty storage in mind. The lid can be removed completely and is recessed with a reinforced box for easy stacking during storage and transport. These boxes feature padlock holes for locking and security. NSF Certified - Conforms to the requirements of NSF/ANSI 2 - Food Equipment. Made of heavy-duty, reinforced plastic that can withstand heavy use Stackable design helps conserve storage space. Easy to use.