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Deal.ai › Chamberlain › Garage Door Openers
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Chamberlain 8808CB-P 8' Garage Door Belt Drive Rail Extension Kit

Chamberlain 8808CB-P 8' Garage Door Belt Drive Rail Extension Kit

3.6(20 ratings)

Best price now

$65.99at Blain's Farm & FleetObserved at 4:20 PM

Compared across 4 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

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Our take on the Chamberlain 8808CB-P 8' Garage Door Belt Drive Rail Extension Kit

The Chamberlain 8808CB-P is an 8-foot belt-drive rail extension kit that lengthens a compatible Chamberlain belt-drive opener to fit a taller garage door. It is a single-purpose accessory, not a standalone opener, so it only helps if you already own a matching unit. The best new price is $65.99 at Blain's Farm & Fleet as of November 7, 2026, with four stores listing it new.

Best forOwners of a Chamberlain belt-drive opener with an 8-foot doorNew-build garages with high ceilingsReplacing a missing or damaged extension railDIY installers adding height to an existing opener
Pros
  • Adds 8 feet of rail travel for taller doors
  • Belt-drive design keeps operation quiet
  • Matches Chamberlain belt-drive openers for a direct fit
  • Simple bolt-together install for a handy DIYer
Cons
  • Only works with compatible Chamberlain belt-drive models
  • Not a complete opener; useless without the base unit
  • Some buyers report fit issues with certain opener models
  • Limited third-party reviews, so compatibility is hard to confirm

Chamberlain 8808CB-P 8' Garage Door Belt Drive Rail Extension Kit prices at every store

  • Blain's Farm & FleetNew

    In stock

    $65.99Observed at 4:20 PM
    Visit Blain's Farm & Fleet
  • WalmartNew

    In stockSold by Meishka Products LLCReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $71.98Free shippingObserved at 4:20 PM
    Visit Walmart
  • The Home DepotNew

    In stock

    $71.98Free shippingObserved at 4:20 PM
    Visit The Home Depot
  • Lowe'sNew

    In stock

    $75.00Free shippingObserved at 4:20 PM
    Visit Lowe's

Store links may earn us a commission. Some prices via Klarna.

Chamberlain 8808CB-P 8' Garage Door Belt Drive Rail Extension Kit price history

Lowest price we've seen: $65.99 on Nov 7 at Blain's Farm & Fleet. Tracked across 3 stores since Nov 7.

What reviewers say

  • 3.6 / 520 ratings

Ratings are middling at 3.6 out of 5 from 20 ratings. Buyers who got the right match describe an easy install; others ran into fit problems with their opener.

What people mention
  • CompatibilityCriticisedBuyers say it fits some Chamberlain belt-drive openers but not others, so model matching matters.
  • InstallationMixedSome describe a quick bolt-on job; others found the steps unclear.
  • BuildPraisedOwners call the rail sturdy and well made.
  • NoisePraisedThe belt-drive setup stays quiet in use.

About the Chamberlain 8808CB-P 8' Garage Door Belt Drive Rail Extension Kit

BELT DRIVE EXT KIT

Specifications

color
MulticolorSource
size
8'Source

Questions and answers

Will this fit my Chamberlain opener?
It is made for Chamberlain belt-drive openers that accept an 8-foot rail extension. Check your opener's model number against Chamberlain's compatibility list before buying.
Does this include the opener itself?
No. It is only the rail extension kit. You need an existing compatible belt-drive opener.
What door height does it add?
It extends the rail by 8 feet, letting the opener serve a taller garage door.
Is it hard to install?
It bolts onto the existing rail. A handy DIYer can do it, but the instructions are thin on some model-specific steps.
When is the best time to buy?
It is a low-volume accessory, so discounts are rare. The best new price was $65.99 at Blain's Farm & Fleet as of November 7, 2026.
Where is the Chamberlain 8808CB-P 8' Garage Door Belt Drive Rail Extension Kit cheapest?
At Blain's Farm & Fleet, for $65.99, as of our latest check.
What do buyers say about the Chamberlain 8808CB-P 8' Garage Door Belt Drive Rail Extension Kit?
Rated 3.6 out of 5 from 20 ratings.
Where can I buy the Chamberlain 8808CB-P 8' Garage Door Belt Drive Rail Extension Kit?
4 stores we checked sell it, including Walmart, Blain's Farm & Fleet, The Home Depot, Lowe's.

Stores we've priced the Chamberlain 8808CB-P 8' Garage Door Belt Drive Rail Extension Kit at

  • Blain's Farm & Fleet deals and prices
  • Home Depot deals and prices
  • Lowe's deals and prices

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