Since i have a 9′ garage ceiling also two 7′ door openings, when installing the doors i opted for one 8′ track to lift the tracks closer to the ceiling also out of the work area. This property the door has to go raise a foot before it starts back, therefore traditional openers won’t work. For 20 yrs. I’ve been manually operating the door while occasionally looking for one opener solution. The Liftmaster 3800 was the door answer, also the “laser parking assist” the spotting answer. (3″ bumper to door also 3″ grate to workbench, no more court tennis ball from the ceiling)

It’s been in service a week also works flawlessly. The quality of the operating unit, cable tension monitor, also hook appears very high. The block unit, remote, also light a little lesser therefore but seem adequate for the job.(few moving parts). The instructions are completely also complete. And it comes with sufficiently fasteners for most installations.

My installation was a little lengthly because i’m therefore picky. (ran a new outlet through the ceiling to get 4″ from the power unit, the parking lot aid comes with 8′ of bell wire, needed 20′ – besides through the ceiling, the tension monitor needed a spacer block, cut one to fit also painted to match the finished also textured wall, also therefore on) the hook lone needs a 1/2″ hole instead of 3/4″ if you can perforate accurately. If i did it besides i wouldn’t install the hook. The door is insulated also very heavy, i don’t think schwarzenegger could drive it without the spring aid.

The lone obstacle i had ended raise being a programing issue of my own making. After setting the open travel limit to the top of the gap – 7′, the door would open but not close. The education troubleshooting section indicated the trouble was the cable tension monitor. I outlook the one not the obstacle since it’s curler was 2″ from the drum as recommended also it was under tension with the door open also closed. After 20 mins. Of reprogramming, checking connections also rereading instructions, staring at the monitor when closing diagnosed the obstacle. When the door starts down there is a jerk which slackens the cable for a fraction of a second allowing the tension monitor to close if the door is close to the top but not fully open. Reprogramming to 8′ pulls the cable away from the block a couple of inches therefore during the jerk the monitor movement is not sufficiently to close. An extra foot of door travel, but it works great!

Read more article at A great solution for a modified door installation.