Products Custom Chair Risers TbarM1 4' x 48' x 1'-3' TBarM5 TBarM3 TBarM2 9 tier chair riser (2) 6 tier chair riser Bowling alley chair riser Festival chair risers. Tiered riser for a choir Glen Beck audience risers (1) Glen Beck audience risers (2) Glen Beck audience risers (3) 3 tier audience riser. 9 tier chair riser (1)