CHAMBERLAINGroup G8808CB-P Chamberlain 8808CB 8-Foot, Compatible Whisper Drive Plus Models, Includes Replacement Belt Garage Door Opener 8 Ft Rail Extension Kit

This is an extension required for a taller garage door, so generally speaking it either works or it doesn't in my mind. After installing it, it seems to fit in the "it works" category. It arrived in good condition, and installation (done at the same time as the replacement Chamberlain Whisper Drive Plus garage door opener), took only a couple of hours. I recommend this extension, if you need it.

Got a great deal on a new opener to replace my old broken one. Unfortunately it was a 7' opener and would not get the door high enough to fit my police truck inside due to the lightbar and antennas. Put this extension on and now the door fully opens so the truck gets to go back inside

After installing the first one, I changed Internet provider to T-Mobile and had connections issues. Had to add wireless extender To reconnect. It affected my bank login also so no fault of Chamberlain.Bought the second unit for son in law. After he installed the opener they love it. Super quiet operation compared to chain drive. LED lights really make a difference. Camera and battery backup just real bonus. Definitely recommend this.

The 8' extension kit is well made and works well. This extension kit is a must have item to get a new Chamberlain GD opener to travel the full 8' needed to fully open a standard 8' tall garage door; as the standard new Chamberlain door opener as sold only opens 7'. The kit is a great fix for a substandard new Chamberlain GD opener unit that does not replace an older opener. Chamberlain should just sell both a 7' and 8' garage door opener assembly without requiring you to order the extension kit as an add on which results in the wasting of the original 7' opener supplied belt as well as the original last part of extension pole which is wasteful and an extra expense on the purchaser and burden to the local landfill.

Easy to install on exsisting opener rail.

I didn't realize the garage door opener I bought was only for a 7' door until after I was almost done installing it. This extension had everything I needed to extend the opener to accommodate my 8' door. Very easy to install, just replace the front section of track and the belt. I had to move my opener back as well since I had already mounted it with the shorter track. Works just as good as the original track just gives the extra length needed for an 8' door.

I had a Chamberlain belt wear out on me, and needed to purchase a replacement. I thought I'd try a knock-off, but when I tried to install it, it ran about 5 inches short.I only needed the belt, but broke down anyway and purchased the OEM Chamberlain 8 foot extension kit, which includes a rail and a belt. It was less expensive than purchasing a belt alone (or at least I couldn't find a belt to fit being sold for less not including the kit). Belt fit perfectly. I'm now stuck with an extra rail extension. I'm sure I'll figure out something else to use it for.

Kit included new (longer) belt, rail extension, and other additional parts to ensure that the Chamberlain Smart Belt Drive Garage Door Opener would have sufficient travel length for door to open all the way. Works great.