Get your students learning with the Mobile Garden Center by Whitney Brothers! Perfect for learning about the plant world and countless STEM applications, this garden center encourages collaboration between students and has 28 included clear plastic planting containers to conduct several simultaneous experiments! The middle shelf has a vertical center divider that creates a mid-line storage shelf, while the bottom shelf compartment houses the two included Gratnell trays with lids. Four non-marking rolling casters for easy transport and storage. Easily fits through the standard door opening. GreenGuard Gold Certified. Made in the U.S.A.