Material: Carbon Steel; Surface: Frosted Black; Track: Pre-Drilled

Door Weight Capacity: 220lb. 

Only steel track is included. 

4FT track: 1*48" track; (one-piece rail)
5FT track: 1*60" track; (one-piece rail)
6FT track: 1*72" track; (one-piece rail)
6.6FT track: 1*79" track; (one-piece rail)
7.5FT track: 1*90" track; (one-piece rail)
8FT track: 2*48" track; (2pcs rail with 1*track connector)
9FT track: 1*48" track + 1*60" track; (2pcs rail with 1*track connector)
10FT track: 2*60" track; (2pcs rail with 1*track connector)
11FT track: 1*60" track  + 1*72" track; (2pcs rail with 1*track connector)
12FT track: 2*72" track; (2pcs rail with 1*track connector)
13FT track: 2*79" track; (2pcs rail with 1*track connector)
14FT track: 2*60" track + 1*48" track; (3pcs rail with 2*track connector)
15FT track: 2*90" track; (2pcs rail with 1*track connector)
16FT track: 2*60" track + 1*72" track; (3pcs rail with 2*track connector)
17FT track: 1*60" track + 2*72"track; (3pcs rail with 2*track connector)
18FT track: 3*72" track; (3pcs rail with 2*track connector)