Fully assembled, polypropylene Mega Racks™ are great in clinical labs for storage of high quantity samples. Sturdy, light weight material for easy transport. The rack has identifying alpha-numerics for quick location and retrieval of tubes. Conveniently place different test groupings into one rack and eliminate need for multiple racks. Available in two sizes to fit standard 12/13mm or 16mm tubes. Choose from blue or white.