Cambro, EXSK2172V1480, Camshelving® Elements XTRA Universal Shelf Kit, 21"W x 72"L, withstands temperature from -36°F (-38°C) to 190°F (88°C), includes: vented shelf plates for 1 shelf with Camguard® antimicrobial protection, (2) traverses & (1) bag of 4 dovetails (2 left, 2 right), speckled gray, NSF listed components, Made in USA (NOTE: This is a new product line. It is NOT compatible with original Elements Series products.)