Our terrazzo mop service/sinks are usually found in the janitor’s closet, and may take many different shapes, depending on your need and space constraints. Stern-Williams designs and manufacturers vandal resistant aggregate and metal drinking fountains. We offer high-quality ADA compliant and standard shower floors. Choose from a variety of models, including non-slip surfaces, space savers, back outlet and more. Shawnee Mission, KS 66208. Phone: 913.362.5635. Fax: 913.362.6689.