3 ms·
Looks like it'd be a real pain in the ass to open when the motor fails.
by rjdagost 12y ago
Looks like it'd be a real pain in the ass to open when the motor fails.
- lsaferite 12y agoHaving worked in a warehouse building with massive roll-up doors that had electric motors I would imagine these doors have a backup that uses a reduction gear to make manual operation simple yet slow.