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Chamberlain 1.25 in. W X 49.47 in. L Steel Chain Drive Rail Extension Kit

Extends your opener's rail to fit a full 10-ft. garage door, built in steel for lasting use.
Chamberlain MPN G7710CB-P
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This product isn’t sold on our website — see your local hardware store.

In-Store Exclusive

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This Chamberlain item is one you'll find in stores rather than online — and that's often the better way to buy. In store you get the genuine article, full manufacturer warranty, and real advice from someone who's actually handled it — no counterfeits, no gray-market resellers.

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About Product Overview

This Chamberlain kit extends the rail on compatible garage door systems to handle a 10-ft. door, giving the opener the reach it needs without swapping the whole unit. It's built from steel for the added length to hold up under regular use, and it's sized specifically for Chamberlain belt drive models with a 10-ft. garage door opening.

  • Product Type: Chain Drive Rail Extension Kit
  • Material: Steel
  • Length: 49.47 in.
  • Width: 1.25 in.
  • Application: Chamberlain belt drive models, 10-ft. garage door
  • Residential use

The Details Specifications

Brand Chamberlain
Model / MPN G7710CB-P
UPC 012381187065
Weight 10 lbs
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
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