The Tollan Stargate was a custom-made Stargate on the planet Tollana, built by the Nox and Tollans. (SG1: "The DVD Collection 19") The Tollan gate was smaller and slimmer than the Stargates built by the Ancients, and was pale white in color. However, it seems to lack a DHD, or even an inner track for manual dialing, suggesting a DHD was in a nearby control center or building.