Description:

For use with Chamberlain Power Drive chain drive garage door openers featuring the quick-install rail system. Works on garage doors up to 8 feet high. Includes rail extension, replacement chain/cable, and all necessary hardware. Chain drive rail extension kit Works on garage doors up to 8 feet high For use with Chamberlain Power Drive chain drive garage door openers featuring the quick-install rail system Includes rail extension, replacement chain/cable, and all necessary hardware. Model # 7710CB Features: For use with garage doors up to 10 feet high Kit includes rail extension and replacement chain Comes ready to install - with complete instructions Works with all Chamberlain chain drive models For model numbers ending in S Item Dimensions: 3" L x 2" W x 50. 5" H.