Dalby Full Height Double Turnstile Security GateFull Height Double Turnstile 120 degree The SFD 4000 Full Height Double Turnstile Security Gate is designed and manufactured to the highest specification using top quality components and materials offering rugged reliability and durability for any solution whether controlling pedestrian traffic, incorporated as part of a perimeter system enhancing security or retrofitted into an existing fence line. The SFD 4000 Full Height Double Turnstile Security