The MAC722 adds support for two displays sidebyside to medium cart MFCUB and floor stand MF1UB . Note: Two MSBUB interface brackets are needed to attach displays to the MAC722. However, carts and floor stands already come with one MSBUB. Be sure to order another MSBUB to attach the second display. Supports two 39.258.8 99.6 149.4 cm wide displays must be same size Supports two 39.258.8 99.6 149.4 cm wide displays must be same size