Main Material: High quality 304 stainless steel Wire drawing technology, corrosion protection

The distance from the top of the door to the ceiling should be at least6 inches

Fit for door panel thickness: 1-3/8" to 1-3/4"

Door Max Weight: Total 220lbs

Usually, we recommend the track length should be at least 2 times the doors width or the opening.

For example, if the door is 30'' wide. You will need 2 * 30'' = 60'' long track. Or if you have an opening that is 30'' wide, you will need at least 60'' long track.

All tracks are pre-drilled holes. Tracks 7.5 FT and under are one complete track, 8 FT  and above are connected by multiple shorter tracks,

Packing list：Track; Roller; Spacer；Floor guide；Anti-jump pads；Door stopper；Connector. only the hardware, door not included.

Warranty :5 years