The homeowners purchased 2 entry level door openers from a large chain store, which also provided installation. However, when the installers showed up they informed the customer that his existing door was too close to the ceiling for their standard installation.
There was also a load-bearing beam directly in front of the right door track. We were able to lower both tracks, install a conventional trolly opener on the left door, and use a jack shaft operator for the right door. We also installed a fingerprint identification keyless entry system. Installation for both doors was 4 hours.