Has anyone used this to slide an old barn door 10 feet sideways?

If you can slide it by hand you should be able to make it work. There is only about 9' of travel tho. I have it on a big 10ft roll up door and caught one of my grand kids (40 lbs) hanging on and riding it up last week.

can i use two of these for a 12ft door

Does Chamberlain make a chain for a 12ft door? If you already have 2 chains for a 10ft door my guess is that the answer to your question is "yes". After positioning the motor where you want it for the 12 ft door, your 2 chains will be too long. You will have to shorten one of them and connect it to the other. They're common roller chains and links are readily available .

Will it work with a model C203?

Have no clue to model number you ask.. But this kit is designed to work with the shorter Chamberlain model and gives one the new cable and track to handle the taller door.

Buying a chamberlain wd1000wf 1-1/4 hps smartphone controlled wi-fi gd opener w/ b bup + ultra-quiet operation and have 10' doors - what ext 10'?

The 10 foot extension is a very good choice. I had a liftmaster on a 9 foot door. The 10 ext required me to relocate my head unit back about 18 inches. Do not try to use any of the parts from the 8 foot extension. This only applies to chain drive openers. If the unit you are buying is a belt drive call Chamberlain and get the one they recommend.

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Chamberlain Group 7710Cb-P 7710Cb 10-Foot, Compatible With Chamberlain Drive Models, Includes Replacement Chain Garage Door Opener Rail Extension Kit, Black

Product ID: 4651958

Details

Brand
CHAMBERLAIN
Color
Black
Global Trade Identification Number
Item Weight
9 Pounds
UPC
012381771004

📏10-foot rail extension

🔗Replacement heavy-duty chain

🛠️All-in-one quick install kit

€ 267.97

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Description

🚪 Elevate your garage door game with precision and power!

DURABLE HEAVY DUTY CHAIN - Built to last with premium metal materials ensuring smooth, quiet, and reliable operation.
UPGRADE YOUR GARAGE GAME - Extend your opener’s reach and performance—because your home deserves the best.
TRUSTED CHAMBERLAIN QUALITY - Backed by rigorous testing and a 1-year warranty from North America’s leading garage door opener brand.
EFFORTLESS QUICK INSTALL SETUP - Includes everything you need—hardware, manual, and chain—for a hassle-free upgrade in minutes.
SEAMLESS 10 FOOT COMPATIBILITY - Perfectly engineered for garage doors up to 10 feet tall—no guesswork, just flawless fit.

The Chamberlain Group 7710Cb-P Rail Extension Kit is a 10-foot metal extension designed for Chamberlain chain drive garage door openers, enabling reliable operation for doors up to 10 feet tall. It includes a replacement heavy-duty chain, all necessary hardware, and an instruction manual for quick installation. Backed by a 1-year warranty and Chamberlain’s proven quality, this kit ensures smooth, quiet, and durable performance for your upgraded garage setup.

Specifications

ASIN	B0007KRDA8
Batteries Included?	No
Batteries Required?	No
Best Sellers Rank	#211,496 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #241 in Garage Door Opener System Parts
Color	Black
Customer Reviews	4.4 4.4 out of 5 stars (296)
Date First Available	January 1, 2008
Included Components	Hardware, Manual, Rail Extension, Replacement Chain
Is Discontinued By Manufacturer	No
Item Package Quantity	1
Item Weight	9 pounds
Item model number	7710CB-P
Manufacturer	Chamberlain
Material	Metal
Part Number	G7710CB
Product Dimensions	49.4 x 1.2 x 1 inches
Size	10 Feet
Warranty Description	1 Year

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€ 267.97

Duties & taxes included

In stock

Sold byAmazon CyprusDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Cyprus.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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