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Old 11-05-2013, 12:16 PM
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Jackshaft Garage Door Opener?

I'm looking at adding a garage door opener to my garage. My door is 112" high by 144" wide sectional using a torsion spring in a commercial building. The distance from the shaft center to the ceiling is 11".

It's a little out of focus, but here's what the door looks like from the inside. You can see more of the garage here if you are interested .


I've looked at three LiftMaster models,
3800 3800
,
3900 3900
, and the 8500 at http://www.amazon.com/8500-LiftMaster-Series%C2%AE-Garage-012381850013/dp/B00CUQ616O/ref=sr_1_19?s=hi&ie=UTF8&qid=1383676567&sr=1-19&keywords=liftmaster. The 3800 and 8500 units are "residential" and come with a few accessories that are optional with the "industrial" 3900. While I can't seem to find comparable specs on the lifting capacities, the physical units all appear identical. An Amazon review states that the only difference between the 3800 and 3900 is the accessories. Prices at Amazon are 3900-$243, 8500-$281, 3800-$329.

The only accessory I can see a need for is the keypad entry. Light controls, locks and Internet access seem unnecessary.

From other comments on this discussion board, the LiftMaster units are highly regarded.

Comments, caveats or other recommendations?

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Last edited by hduff; 11-05-2013 at 12:22 PM. Reason: broken link
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Old 11-05-2013, 01:04 PM
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Door

I might look into having a overhead door co. come and give some advise. Those doors are heavy and it might take a commercial opener to work. I'm a guy that does most of my own work but I would hate to have that come down on my Rod. Good luck.
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Old 11-05-2013, 05:21 PM
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I just bought a pair of the jackshaft openers for my two main doors, but mine are not commercial doors. As I understand it, the only differences between the 3800 and 3900 is that the newer ones have "IQ" capacity - can be programmed from your cell phone.
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Old 11-09-2013, 05:04 PM
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I also spoke with a few local guys. The "industrial" 3900 will do it for me. If I change my mind after it arrives, I'll post a follow-up.
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Old 01-10-2014, 08:41 AM
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I know its an old thread but ill add my 2 cents, I've had the 3800 for a few years now and it is a workhorse, no problems whatsoever and it opens a 9' x 16' insulated door in freezing -40C and blistering +40C. Never had a problem except sometimes in the winter blowing snow interrupts the sensors and I have to close it by holding the wall panel control. I've never bothered to try and adjust the sensitivity though, been scared to mess with a good thing.
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Old 01-22-2014, 07:21 PM
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Just so you guys don't think I've forgotten to provide some feedback to all this good advice, I was ready to decide on an opener when the front door to my house was damaged and I needed to replace it ASAP. So it's back to squirreling away money to pay for the totally-necessary-but-my-wife-doesn't-think-so opener for the shop.
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