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

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

Chamberlain Group G8808CB-P Chamberlain 8808CB 8-Foot, Compatible Whisper Drive Plus Models, Includes Replacement Belt Garage Door Opener 8 Ft Rail Extension Kit Chamberlain Group G8808CB-P Chamberlain 8808CB 8-Foot, Compatible Whisper Drive Plus Models, Includes Replacement Belt Garage Door Opener 8 Ft Rail Extension Kit Chamberlain Group G8808CB-P Chamberlain 8808CB 8-Foot, Compatible Whisper Drive Plus Models, Includes Replacement Belt Garage Door Opener 8 Ft Rail Extension Kit Chamberlain Group G8808CB-P Chamberlain 8808CB 8-Foot, Compatible Whisper Drive Plus Models, Includes Replacement Belt Garage Door Opener 8 Ft Rail Extension Kit Chamberlain Group G8808CB-P Chamberlain 8808CB 8-Foot, Compatible Whisper Drive Plus Models, Includes Replacement Belt Garage Door Opener 8 Ft Rail Extension Kit
$ 47.79

Score By Feature

Based on 1,316 ratings
Easy to install
8.38
Accuracy
8.70
Value for money
8.18

OveReview Final Score

How Our Score Is Calculated

Product Description

This is a new 8' rail extension kit made out of structural steel
A kit that is simple to use and easy to use
Manufacturing of the product takes place
Garage doors up to 8 feet high can be opened with this device
All necessary hardware is included, including rail extension, belt replacement, and belt replacement
A new structural rail system based on structural steel
Structural integrity is increased

Questions & Answers

What is the compatibility of this garage door opener with Chamberlain model B970?

If you're interested, this belt drive extension kit will work with our belt drive opener, model B970. We would be glad to answer any other questions you may have.

Are these instructions applicable to the Chamberlain B750 model?

If the rail extension kit is appropriate for your Chamberlain B750 opener, then yes it is.

What if my garage door is 7 feet tall, I need a new belt, but I don't need the rail piece that comes with it? Will this belt work without the rail piece?

The standard garage door comes with everything you need except the extension track piece and a longer belt for a higher door, so it's designed for a 7' high opening. If you order the higher kit, it comes with the extension track piece as well as the longer belt. Besides the original belt, you will also have the additional track section left over if you purchase and install it. The extra track section comes with the kit if you want to open the door higher up. If you just need a new drive belt, for a 7' door, order the part number and you will get just the belt instead of the whole kit. Order the extension kit, but do not use it You need a belt longer than 7 feet if your door is 7 feet. The extension kit was ordered based on the fact that my doors are 8', so I do have a brand new belt for a 7' door. You can make a reasonable offer if you are interested, but I am not aware of the price. I appreciate it

There is a 12 x 16 foot door in front of me. Can I use my existing extension kit without buying Could you tell me if there is ?

A kit of extension will definitely be needed. An opener for the 7-foot standard is included as part of the package. Because the door and the rail (and the belt on it) are only 7 feet long, the door cannot be raised. Despite the fact that I already had an 8ft door, I only purchased the extension for an It would be a good idea to contact Chamberlain to see if an extension is available Depending on what kind of opener you use, it might require a different type of tool.

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

Your garage door needs to be at least 7 feet tall for this to work
3/5

Marketing is for the most part a bad idea, but the product is fine. As a result, For the garage opener, you will need to spend $300. When you open the box, lay all of the pieces out, and begin to read the instructions, Amazon fails to explain to you that this extension kit is required only if your garage door is more than 7ft in height. All of your gear is packed away again and you find your There is almost $50 in it. The extra material for this extension kit is worth less than $1. It includes one rail that's 1 ft longer than the one you already have, and a cable that's presumably 2ft longer than the cable you already have. If you are going to buy it for $50, you should do it now The original kit costs 15% more than the replacement one. An extra $10 would be better if I could receive both parts at once. This is closer to a scam from a reputable company than to be offered a combined offer. It was bitter pill to swallow, but in the end, it was a great product.

Knox Davies
Knox Davies
| Sep 18, 2020
It may not be necessary
3/5

If your garage door is more than 7' but not more than 8', you need this kit. My garage door was 8' exactly, so I had to delay my installation and order it from Amazon since it was over 7'. As part of the kit, you will receive a slightly longer rail piece (about 9' long) and a new belt with a longer length to accommodate the longer rail piece. Having installed the $50 "upgrade", it has become fairly clear to me that I could have completed the installation without it. What proof do we have? The brackets in the ceiling for my motor had to be relocated 10" further back from the door than were already here on the old opener (which had worked for 15 years). There was obviously enough travel in the standard motor track for an 8' door opener from the Chamberlain brand. Chamberlain, thanks for your kind words!.

Ben Vazquez
Ben Vazquez
| Dec 20, 2020
The maximum lifting capacity is marginal
3/5

It's not true that 1 1/2 HP is going to power your car. A 1997 Formula 1 Liftmaster has been replaced. A transmission that had been in service for 20 years As my garage door is heavy, but is properly spring loaded, so it is balanced at its midpoint, both of which influenced my decision to select this opener, which was described as the manufacturer's heavy-duty Although the new lift is more flexible at both ends of the movement, it still has problems at both ends. term "11 and a half horses" is very misleading in the manufacturer's description. In order to achieve the claimed 1 1/2 horsepower and battery backup, it appears that the motor is a small DC motor coupled to a high ratio transmission. Despite the heavy weight of the door, this combination does not have the power to move it and is slow throughout all motions. There are some issues with the main rail which flexes under load and the belt becomes slack and I am concerned about the durability of all the moving parts in the long term. Neither the supporting documents nor the installation manual indicate the maximum lift or closing force of the opener. This is likely a result of a design decision to provide a replacement belt instead of an extension of the belt included In order to use the 8' extension I threw away the unused belt from the base kit. This is a huge waste of time.

I have also forgotten about the battery backup. As soon as the lead acid battery is not used for several years, it will be unable to hold sufficient charge for use. Expenditure for replacing your custom battery should be planned periodically if this is a necessary feature for your application. * Additionally, the exterior keypad remote cannot be operated when the battery is nine volt lithium. With the slightly larger lithium 9 volt batteries, the door wouldn't snap into place. And in my cold climate even the best alkaline batteries aren't long enough to endure the winter. The few good things are that the up-frame is a good fit for most computers, and The new models have improved the ability to adjust the force and motion of the down action. I think that the motion sensor and LED keypad and menu of the wall mounted switch work a lot better than I instructions are provided in a clear and accurate manner. It is not necessary for me to install or test the wifi components and I have not done so. I would say that if you have a light, single width door, it should be fine. In this case, proceed by taking extra precaution if your door is heavy and double width.

Davian Hensley
Davian Hensley
| Feb 26, 2021
Installing this item in a garage is fairly easy for someone with basic garage-work skills if they follow the instructions
5/5

My 8' tall garage door (with 9' garage ceilings) didn't open all the way when I moved into my newly constructed home. I quickly realized that the standard Chamberlain garage door opener would not work for me. My garage door was about 1' deep below the opening when it was attached. Even though it didn't render my opener useless, it was still annoying that it wouldn't reach the bottom of the door. As soon as I ordered this item, the instructions were very clear about how to install, what parts to throw out from the original garage door opener, and how to include the components in this product in my I'm happy to report that it works perfectly and my door now In essence, this makes the rod longer, which includes a longer belt, and allows you to mount the garage door opener a foot deeper into your garage, allowing taller doors to fully open. In addition, the new belt comes with a locking spring to enable you to adjust tension according to your needs.

Sasha CONNOLLY
Sasha CONNOLLY
| Apr 30, 2021
It appears that 7 feet is the standard It is required to purchase this kit if your garage extends to 8 feet
3/5

As you can see, the headline is a bit spoiler. I put my chamberlain garage door opener together, connected one end of the opener, and as I went to connect the motor to the ceiling, I came up a foot short. ought to have read the description more carefully, but thought that the size of my garage was standard. As it turns out, 8 feet is not a standard size, and I never even thought of measuring It would seem that you just need the extension kit to complete the process. Ok, so let's fast forward to now. I checked EVERY Home Depot and Lowes in my state and they DID NOT have There seems to be a lot of interest in this After purchasing the extension kit from Amazon, I returned to the store. Finally, the instructions are very clear, and they provide me with all of the pieces required to FIX the problem I created by Since the original kit did not include an extra compression bolt, I was glad I got this kit with an extra version because reengaging the washer from the original bolt would not have been Chamberlain should offer a 7' or 8' option for the original kit, which I believe is what gives my 3 stars. require you to purchase an extension kit makes no sense and is an attempt to take more money from you. As I read through the reviews, I'm not the first and I won't be the last to make this same mistake. If Chamberlain made this clear to customers up front, or offered the 8' version, they would have done better.

Wyatt Schwartz
Wyatt Schwartz
| Nov 03, 2020

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