Item Unavailable
Click image for a larger view. Hover to zoom in.

Chamberlain 8 ft. Chain Drive Garage Door Opener Extension Kit

Model Number: 7708CB  |  Menards® SKU: 4252541

Online Price

  • Description 

Chamberlain® has revolutionized the garage door opener and opener accessory industry by playing a vital role in taking the garage door opener from a nice-to-have "extra" to a home convenience necessity.

  • Extends opener track for 8 ft. high doors
  • Extension kit for taller garage doors
  • Compatible with Chamberlain openers with Quick-Install square tube rail
  • For model numbers ending in S
  • S indicates Structural Steel Rail

Dimensions: 3.06" x 2.06" x 38.75"

Installation Instructions: view PDF file

To read PDF files, you need the Adobe Acrobat Reader 6.0 or higher. If you don't have it, click here and download it for free from Adobe's site.

Please Note: Prices, promotions, styles and availability may vary by store and online. While we do our best to provide accurate item availability information, we cannot guarantee in-stock status and availability as inventory is sold and received continuously throughout the day. Inventory last updated 11/26/2014 at 5:00am EST. Online orders and products purchased in-store qualify for rebate redemption. Rebates are provided in the form of a merchandise credit check which can only be used in a Menards store.
Online Availability

Available for immediate shipment

Ship to Store - Free!

Not eligible for Ship To Store

Store Availability