The TR 121D full-height turnstile is an evolution of the TR 121S model and provides dual lanes. The two lanes, each regulated by 120-degree, stainless steel rotors designed to resist frequent mechanical stress, offer the chance to combine the need to control access of one user at a time with the added bonus of making entry and exit flow smoother. The arms have a gloss or satin finish, and courtesy lighting can be added to the steel or glass canopy. The TR 121D is a versatile turnstile, and, even with the size that the dual lanes and full height structure entail, it is the perfect fit for a variety of installation environments.