If you ever wanted the absolute perfect, looks-good-all-the-time lab, these shelves are for you. Not only do these shelves make your lab look pristine, neat and clean at all times, the base unit is made from the toughest high density polyethylene to give years of service and stand up to the harshest abuse you can throw at it. With two sizes and a lockable door, supplies or materials are neatly stored, protected and secure. What a combination! Made in the USA