Chamberlain 10 ft. Chain Drive Rail Extension Kit-7710CB - The Home Depot


Model # 7710CB

Internet # 202867899

10 ft. Chain Drive Rail Extension Kit

Chamberlain 10 ft. Chain Drive Rail Extension Kit

This item has been discontinued.
The Home Depot no longer carries this specific product.

$62.97 / each


Model # 7710CB

Internet # 202867899

The Chamberlain 10 ft. Chain Extension Kit includes a rail extension and replacement chain that are compatible with all Chamberlain chain drive doors. It is for garage doors up to 10 ft. in height and comes with complete installation instructions.

  • For use with garage doors up to 10 ft. high
  • Works with all Chamberlain chian-drive models
  • Kit includes rail extension and replacement chain
  • Comes ready to install with complete instructions

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.


Assembled Depth (in.)  2.06 in  Assembled Height (in.)  50.31 in 
Assembled Width (in.)  3.06 in  Maximum garage door height (ft.)  10 
Rail extension length (in.)  144 
Brand/model/year compatibility  2001  Drive System  Chain 
Garage Door Part/Accessory Type  Extension Kits  Product Weight (lb.)  10 lb 
Returnable  90-Day 
Warranty / Certifications
Manufacturer Warranty  1 Year 


Rated 4.5 out of 5 by 13 reviewers.
Rated 5 out of 5 by Love the ease of installation with the extension kit This is the second one I have purchased and I love the ease of installation, especially with the extension kit. It also has performed to my expectations. March 4, 2014
Rated 4 out of 5 by garage door chain the garage door came on time ,and installed easily September 30, 2014
Rated 5 out of 5 by Love the price of this garage door opener. I put this opener up in about 2 hours. It is priced right as always from Home Depot. They didn't have the extension kit, but they ordered it right from the store and it was delivered to my home with no shipping charges. It also shipped very quickly. It came with all the parts and went together very smooth. The performance is very quiet and I love it. April 16, 2013
Rated 5 out of 5 by Worked great It worked like it should. it was a perfect fit. Snapped together nicely. August 26, 2014
Rated 4 out of 5 by Good rail extension that functions as needed and is easy to install Rail extension for a standard Chamberlain chain drive opener that allows it to be used on a taller door. Rail and longer chain is supplied with this kit. Easy to add length to existing rail. Have to throw out the shorter standard chain which is wasteful, but the kit works well and is easy to install. Should include more bell wire and additional hanger angle iron. You'll have to buy more of each of these to install this kit to make a functioning system. That will nearly double the cost of this kit so expect to pay additional money to get the opener installed and functioning for a taller door. Be sure to recycle standard chain and unused rail pieces. March 5, 2014
2 >>


Standard Shipping includes delivery by small parcel service. Processing time varies by product.

Orders for this item may be expedited for an additional fee.

Other Delivery Options:

Express and Expedited shipping options are also available. Estimated arrival times are available in checkout.

If product is eligible for shipping to AK, HI and US Territories additional transit time and remote surcharges may apply.