Internet #206396802

Model # 7708CB-P

Store SKU #293784

0012381180011

Chamberlain 8 ft. Chain Drive Rail Extension Kit

  • Fully opens garage doors up to 8 ft. high
  • Quick-install rail system
  • Includes required 8ft chain and rail extension
$ 31 69
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Frequently Bought Together

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Product Overview

  • Fully opens garage doors up to 8 ft. high
  • Quick-install rail system
  • Includes required 8ft chain and rail extension
The Chain Drive Rail Extension Kit for 8 ft. High Garage Doors is required for reliable, everyday operation of Chamberlain chain drive models in 8 ft. garage door applications. Featuring a quick-install extension rail and replacement chain, the kit includes everything needed for quick and easy installation. Includes one-year warranty, rail extension, replacement chain, all necessary hardware and an instruction manual for easy setup.
  • Proven quality: rigorous quality testing ensures lasting performance
  • Product Dimensions: (D) 37.70 in. x (H) 1.00 in. x (W) 1.25 in.
  • Additional assurance with 1-year warranty
  • Chamberlain is the largest and most dependable garage door opener manufacturer in North America
  • The Chamberlain 8 ft. Chain-Drive Extension Kit is compatible with all Chamberlain chain drive garage door openers (except heavy duty chain drive models C205 and C455)
  • Shop all Chamberlain Garage Door Openers here
  • California residents see Prop 65 WARNINGS

Product Overview

  • Fully opens garage doors up to 8 ft. high
  • Quick-install rail system
  • Includes required 8ft chain and rail extension
Model #: 7708CB-P
Sku #: 293784
Internet #: 206396802

The Chain Drive Rail Extension Kit for 8 ft. High Garage Doors is required for reliable, everyday operation of Chamberlain chain drive models in 8 ft. garage door applications. Featuring a quick-install extension rail and replacement chain, the kit includes everything needed for quick and easy installation. Includes one-year warranty, rail extension, replacement chain, all necessary hardware and an instruction manual for easy setup.

  • Proven quality: rigorous quality testing ensures lasting performance
  • Product Dimensions: (D) 37.70 in. x (H) 1.00 in. x (W) 1.25 in.
  • Additional assurance with 1-year warranty
  • Chamberlain is the largest and most dependable garage door opener manufacturer in North America
  • The Chamberlain 8 ft. Chain-Drive Extension Kit is compatible with all Chamberlain chain drive garage door openers (except heavy duty chain drive models C205 and C455)
  • Shop all Chamberlain Garage Door Openers here
  • California residents see Prop 65 WARNINGS

Info & Guides

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

Key Features

Product Overview
Key Features
  • Fully opens garage doors up to 8 ft. high
  • Quick-install rail system
  • Includes required 8ft chain and rail extension
The Chain Drive Rail Extension Kit for 8 ft. High Garage Doors is required for reliable, everyday operation of Chamberlain chain drive models in 8 ft. garage door applications. Featuring a quick-install extension rail and replacement chain, the kit includes everything needed for quick and easy installation. Includes one-year warranty, rail extension, replacement chain, all necessary hardware and an instruction manual for easy setup.
  • Proven quality: rigorous quality testing ensures lasting performance
  • Product Dimensions: (D) 37.70 in. x (H) 1.00 in. x (W) 1.25 in.
  • Additional assurance with 1-year warranty
  • Chamberlain is the largest and most dependable garage door opener manufacturer in North America
  • The Chamberlain 8 ft. Chain-Drive Extension Kit is compatible with all Chamberlain chain drive garage door openers (except heavy duty chain drive models C205 and C455)
  • Shop all Chamberlain Garage Door Openers here
  • California residents see Prop 65 WARNINGS

Product Overview

  • Fully opens garage doors up to 8 ft. high
  • Quick-install rail system
  • Includes required 8ft chain and rail extension
Model #: 7708CB-P
Sku #: 293784
Internet #: 206396802

The Chain Drive Rail Extension Kit for 8 ft. High Garage Doors is required for reliable, everyday operation of Chamberlain chain drive models in 8 ft. garage door applications. Featuring a quick-install extension rail and replacement chain, the kit includes everything needed for quick and easy installation. Includes one-year warranty, rail extension, replacement chain, all necessary hardware and an instruction manual for easy setup.

  • Proven quality: rigorous quality testing ensures lasting performance
  • Product Dimensions: (D) 37.70 in. x (H) 1.00 in. x (W) 1.25 in.
  • Additional assurance with 1-year warranty
  • Chamberlain is the largest and most dependable garage door opener manufacturer in North America
  • The Chamberlain 8 ft. Chain-Drive Extension Kit is compatible with all Chamberlain chain drive garage door openers (except heavy duty chain drive models C205 and C455)
  • Shop all Chamberlain Garage Door Openers here
  • California residents see Prop 65 WARNINGS

Info & Guides

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

Compare Similar

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Price
Was $25.94
$22.05
Save $3.89 (15%)
$31.69
$47.99
$67.45
Ratings (17) (20) (33) (16)
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Specifications

Dimensions

Maximum Garage Door Height (ft.)
8

Details

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

Garage Door Part/Accessory Type
Garage Door Opener Extension Kit
Returnable
90-Day

Warranty / Certifications

Manufacturer Warranty
1 Year

Questions & Answers

DOES THIS WORK WITH Chamberlain C410 OPENER?

DOES THIS WORK WITH Chamberlain C410 OPENER?
Asked by: MARV
Hi Marv, yes, this would be the correct 8ft rail extension kit for your C410.
Answered by: TheChamberlainTeam
Date published: 2018-12-06

will this work with a liftmaster 41AC050 model?

will this work with a liftmaster 41AC050 model?
Asked by: phil
Liftmaster uses a different rail than Chamberlain. For Liftmaster you would need to buy a whole new 8' rail assembly. This will not work. By the way the number you gave us is a part number for the logic board.
Answered by: Stingrayaxe
Date published: 2019-09-13

I have a door with only 9 feet for rails and opener will the 8ft kit do the trick

Asked by: Neil
Hi Neil - The length of the extension is based on the height of the garage door. Our standard openers open a 7ft door. The installed length of our standard 7ft door with rail and motor head is between 123 to 128 inches. This 8ft extension allows you to fully open an 8ft garage door. The installed length of our rail and motor head with the 8ft extension is between 135 to 142 inches, depending on which garage door opener you are looking at.
Answered by: TheChamberlainTeam
Date published: 2016-05-04

Will this work with C450c one door is 8' and the other is 10'

Asked by: EW
Yes, this unit will work with an 8' door but not a 10' door.
Answered by: CommunityAnswer
Date published: 2018-12-30
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Customer Reviews

Chamberlain 8 ft. Chain Drive Rail Extension Kit is rated 4.7 out of 5 by 20.
Rated 3 out of 5 by from The extension came with all the required parts and was easy to assemble and does work. However it... The extension came with all the required parts and was easy to assemble and does work. However it does seem to be rather light duty in that the rail system flexes a lot and does not seem to be as rigid as would be expected. I also have a screw drive opener and although the rail is aluminum it does not flex and move as much as this chain driven opener. I guess time will determine its durability.
Date published: 2019-08-21
Rated 5 out of 5 by from Works great Works great
Date published: 2019-07-23
Rated 5 out of 5 by from You need this if you have an 8 foot garage door. You need this to make an 8 foot garage door to work, remember to purchase it with your matching garage door opener. Easy to install, just swap the bar and chain and you're good to go.
Date published: 2019-05-16
Rated 5 out of 5 by from This garage door opener was more complicated to install than... This garage door opener was more complicated to install than the others my husband has installed in the past. However it works great now than it installed.
Date published: 2019-07-16
Rated 5 out of 5 by from Exactly what was needed Bought 2 sets for 8.5 ft double garage doors and worked perfectly with my Chamberlain garage door openers.
Date published: 2019-05-06
Rated 5 out of 5 by from Well constructed, easy to assemble ... Well constructed, easy to assemble
Date published: 2019-04-30
Rated 5 out of 5 by from Works as it should Works as it should
Date published: 2019-05-14
Rated 5 out of 5 by from Great deal Worked great with sears opener and and a lot better price.
Date published: 2016-11-24
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