I have been having trouble for months with my garage door opening and closing. A friend mentioned could be sensors. So I purchased, and they work perfectly and solved my door not closing problem!
Part arrived within a week with USPS tracking and it fit perfectly to replace the old broken part. I don't have to open my garage by hand no more. Good stuff, I'm planning to buy another coupler as back up.
The 3 inch garage door sheaves I ordered are a perfect replacement for the ones installed since 1996. The ones I replaced had bad bearings due to the use of 5/16 vice the required 3/8 attaching bolts and 14 years of service. The price was better than anywhere else and I received them lickity split. I'll most definitely shop Preferred Doors again.