NSF Certified Four Bowl Hand Washing Sink : NS-004 Monsam’s NSF Certified four bowl hand washing sink is designed specifically to accommodate high traffic scenarios. This chemistry lab sink features 3 large sinks plus 1 smaller sink that is on the other side of a divider. Ideal for both indoor and outdoor use, it comes on heavy duty, swivel casters to allow for mobility. This 4 bowl sink is constructed in the United States utilizing lightweight aluminum and FDA-approved plastics, ensuring that it can endure the toughest of work environments. Call us today to discuss the endless, customizable options in design and color for this amazing portable sink 1-800-513-8562 Available Upgrade in Stainless Steel Finish Available Upgrade to 12″ Deep Basins If you need a more spacious sink, be sure to check out our NSF Certified Four Basin Sink With 2 Drainboards.