Model # 7708CB

Internet #100431682

Chamberlain 8 ft. Chain Drive Extension Kit
0012381077083

Chamberlain

8 ft. Chain Drive Extension Kit

  • Fully open garage doors up to 8 ft. high
  • Quick-install rail system
  • Durable chain drive replacement belt
$3077 /each
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Frequently Bought Together

Product Overview

  • Fully open garage doors up to 8 ft. high
  • Quick-install rail system
  • Durable chain drive replacement belt
The Chamberlain 8 ft. Chain-Drive Extension Kit is compatible with Chamberlain chain drive garage door openers (Does not fit Chamberlain Model # HD220 Internet # 205215863 Store SKU # 1000053358t). It comes with a rail extension and replacement belt and can be used with garage doors up to 8 ft. high. Easy to install.
  • For use with garage doors up to 8 ft. high
  • Works with all chamberlain chain-drive models
  • Kit includes rail extension and replacement chain
  • Comes ready to install with complete instructions
  • Note: product may vary by store

Product Overview

The Chamberlain 8 ft. Chain-Drive Extension Kit is compatible with Chamberlain chain drive garage door openers (Does not fit Chamberlain Model # HD220 Internet # 205215863 Store SKU # 1000053358t). It comes with a rail extension and replacement belt and can be used with garage doors up to 8 ft. high. Easy to install.

California residents: see   Proposition 65 information

  • For use with garage doors up to 8 ft. high
  • Works with all chamberlain chain-drive models
  • Kit includes rail extension and replacement chain
  • Comes ready to install with complete instructions
  • Note: product may vary by store

Info & Guides

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Name 8 ft. Chain Drive Extension Kit 10 ft. Chain Drive Rail Extension Kit Heavy Duty Chain Drive Rail Extension Kit for 8 ft. Garage Doors 10 ft. Belt Drive Rail Extension Kit
Brand Chamberlain Chamberlain Chamberlain Chamberlain
Ratings (60) (31) (0) (38)
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Specifications

Dimensions

Maximum garage door height (ft.)
8

Details

Brand/model/year compatibility
1993 and newer
Garage Door Part/Accessory Type
Garage Door Opener Extension Kit
Returnable
90-Day

Warranty / Certifications

Manufacturer Warranty
1 year

Specifications

Dimensions

Maximum garage door height (ft.)
8

Details

Brand/model/year compatibility
1993 and newer
Garage Door Part/Accessory Type
Garage Door Opener Extension Kit
Returnable
90-Day

Warranty / Certifications

Manufacturer Warranty
1 year

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Questions & Answers

can this extension really be used with the Chamberlain model #995XD 1/2 HP system?

The extension rail looks radically different than what I have. I have not unpacked the instructions. but wanted your input first. Some time ago I was quoted to use extension kit # 7806CB. My local Home Depot does not carry that unit.
Asked by: Dave
the extension kit I purchased worked well with my opener. 4.652 out of 5 (207) Premium 1/2 HP Chain Drive Garage Door Opener
Answered by: texan
Date published: 2015-11-05

Does this work with the NEW HD220 1/2 HP Chain Dr?

The HD220 is a new GD opener being stocked in stores. Does this extension work with it?
Asked by: millworkDH
IT SAYS IT WON'T IN ABOVE PARAGRAPH....DXD
Answered by: DXD205
Date published: 2015-10-23

MY GARAGE DOOR IS 7'-4''. DO I NEED TO ORDER AN EXTENSION KIT?

MY GARAGE DOOR IS 7'-4''. DO I NEED TO ORDER AN EXTENSION KIT?
Asked by: MJH
No, the standard 7 foot rail will still work
Answered by: Aledo
Date published: 2017-06-07

Is the 8 foot extension in regards to the height of the door or how high it is off the ground when opened up?

Asked by: Jrock8788
The full 8' opening. Even the manual door lift handle is out of the way.
Answered by: desoto
Date published: 2017-04-11
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Customer Reviews

8 ft. Chain Drive Extension Kit is rated 4.5 out of 5 by 60.
Rated 5 out of 5 by from Easy add-on Excellent product for those of us who have 8 ft tall garage doors. Parts integrate easily with the garage door opener. Assembles quickly with great instructions.
Date published: 2017-05-23
Rated 1 out of 5 by from Product specifications say it will work on ALL Chamberlain chain drives. After 1 hour on phone wi... Product specifications say it will work on ALL Chamberlain chain drives. After 1 hour on phone with Tech support I was told it would not work on Chamberlain PD 222 opener. Chamberlain Tech support was terrible. They do not know their products. The new chain was about a foot to long and they gave me instructions on how to shorten it. I have the skills and tools to do this, but I thought they could just give me the right chain in the first place.
Date published: 2017-03-27
Rated 5 out of 5 by from The extension worked fine. It took longer then I expected because I had to take the whole assemb... The extension worked fine. It took longer then I expected because I had to take the whole assembly apart. I was expecting a longer tip, and a short piece of chain. Instead I got a whole new chain and the extension was on the base rod. It all works fine, much better than the old system.
Date published: 2017-07-18
Rated 4 out of 5 by from The first one I purchased was packaged wrong at the... The first one I purchased was packaged wrong at the Joplin Mo. store, bad experience at that store, (I'll never go to that store again). Took to another store and, they were out of stock. Ended up getting it shipped to me straight from the manufacture. The garage door opener is good.
Date published: 2017-08-29
Rated 4 out of 5 by from The extension kit includes both one longer rail segment and a complete longer chain. I knocked o... The extension kit includes both one longer rail segment and a complete longer chain. I knocked off one star because of the cost. There should have been an option to buy only the longer version and not have a shorter chain and segment to through away.
Date published: 2017-06-07
Rated 5 out of 5 by from I have a 8'0 door and needed this because the standard Chamberlain opener only lifts a 7'0 door, ... I have a 8'0 door and needed this because the standard Chamberlain opener only lifts a 7'0 door, This product did the job as expected, Easy to install in place of the original segment and all the hardware needed is included.
Date published: 2017-04-25
Rated 5 out of 5 by from This kit came with everything needed including specific instructions for an existing installation... This kit came with everything needed including specific instructions for an existing installation or a new installation. I am very pleased with the purchase.
Date published: 2017-04-11
Rated 4 out of 5 by from I was impressed by it's satin finish,it is just what... I was impressed by it's satin finish,it is just what I needed to to complete my garage decor.
Date published: 2017-03-28
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