From your description, we can know, and it is definitely: the sliding door you purchased is a sliding door with two tracks and two leaves.

From a professional point of view, the factory standard configuration of two-rail and two-leaf sliding doors is generally only equipped with one large handle. It's just that the other handle is not a handle in your opinion.

The large handle is usually installed on the outdoor side, on the outdoor track; the indoor door actually has a handle, and it is a locked handle. We usually call it "one-word lock", "hidden lock", "side lock", etc.; hidden locks are usually found on both sides of the indoor push-pull fan. One side has a lock, and the other side has no lock but has a decorative effect and is convenient. The effect of user push and pull.

The design of the sliding door with two large handles or even four large handles is:

Two tracks and four leaves or three tracks and six leaves