The north side of the Audi Dealership of Birmingham building required fire-rated lot-line protection. The challenge was to blend the desired fire-rated glazing system with the sleek aesthetic of the non-rated system. The design team found their solution with a 2-hour fire-rated exterior Fireframes® Curtainwall Series system from Technical Glass Products. Its slender profiles and clear fire-rated glazing blend well with the adjacent non-rated curtain wall, while its strength allows for 21-foot free spans.