Gilbert will miss his third consecutive game because of ankle and knee injuries, and the fourth-year veteran is a surprise scratch for the 1 p.m. ET game at the Georgia Dome.
Gilbert practiced last week and had been listed as probable on the Steelers’ final injury report of the week. Mike Adams will start in his place at right tackle.
Harrison had been listed as questionable after he was only able to practice on a limited basis last week. He will miss his second consecutive game because of a knee injury.
Taylor is also out as expected after the 12th-year veteran did not practice last week because of shoulder and forearm injuries.
The Falcons' Jones, who leads the NFL with 1,428 receiving yards, had been listed as questionable on the Falcons’ final injury report of the week because of a hip injury. The Falcons will also be without starting safety William Moore, who hurt his ankle last Monday night in Green Bay.