COMES WITH ALL BINARY MOUNTS AND 4 BLANKS!The Strong SR-SHF-MOIPV3-V10-6U Vertical Rack Shelf is a sturdy and reliable expansion chassis designed for wall-mounted installation in enterprise networking and server environments. With a rack unit height of 6U and a width of 19 inches, this shelf provides ample space for organizing and storing networking equipment and servers. The brand's reputation for strong durability ensures that this product can safely hold and protect your valuable IT infrastructure components.