Exhibit Hall B at the Hynes -- offering 37,250 square feet of space -- can be used independently or combined with Exhibit Hall A for more than twice the contiguous exhibit space. To maximize floor traffic, Hall B gives attendees access from multiple internal and external entrances, including a direct connection from the Boylston Street entrance off of one of Boston.s main avenues. Hall B gives you a choice of registration areas, and offers drive-on floor access for convenient freight delivery.