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

Easy to install on exsisting opener rail.

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.

I'm basing this review on the product itself, and not on my opinion that Chamberlain should include this standard in all their belt-driven garage door openers.The product is pretty straight forward. If you have an 8-foot garage door, you need this extension kit. Otherwise, the standard kit will not be long enough for your door to traverse the necessary length to fully open the door. The product itself is of the same grade and quality as the supplied rail and belt within your new garage door opener kit. The only thing you're really doing is substituting the the original front rail section with this front rail section. It's the same exact part, only longer. In addition, this kit includes a longer belt to now accommodate the overall longer rail. They also throw in a couple extra parts which I found I did not require, e.g., a longer rope for the emergency release handle, and an extra support bar to provide greater stability for the motor mount.The install was very easy as this kit required no further effort than what is required to perform the original install. Once again, this just replaces parts in your new garage door opener. Yet again, begging the question, why not include these parts in the original box? I get the extra cost associated with including both rail headers and belts, but for a major manufacturer it's pennies on the dollar.

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.

Fast shipping/ good item / buy with confidence AAA+++

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.

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.

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.