Top Guard Truncated Domes for FDOT E7K97 in Tampa (Hillsborough County) July 24, 2017 Posted by on July 24, 2017February 2, 2018 Top Guard yellow truncated domes installed +/-1450 sq.ft. in Tampa (Hillsborough County) from Hillsborough Ave to Adamo Dr. FDOT contract E7K97. Ajax is prime.