Download this image AirCore Bridge Cantilever Corridor Products utilized AirCore Bridge® PoE compatible Right Light Height,Spacing,500Hz,1000Hz,2000Hz|| 8",12" on center,3.36,5.45,9.08|| 8",18" on center,3.56,6.31,10.18|| 8",24" on center,3.97,6.46,10.78|| 12",12" on center,5.19,7.92,10.86|| 12",18" on center,5.21,8.78,11.90|| 12",24" on center,5.78,9.01,12.24|| /products/acoustic-acoustic-integrated-ceiling-systems/aircore-bridge-auabg Yes AirCore Bridge® Height 8" 8" 8" 12" 12" 12" Spacing 12" on center 18" on center 24" on center 12" on center 18" on center 24" on center