This chain drive extension kit is for use with Chamberlain Power Drive chain drive garage door openers featuring the quick-install rail system. It works on garage doors up to 10' high and includes rail extension, replacement chain/cable and all necessary hardware.
| | Chamberlain Chain Drive Rail Extension Kit for 10' High Garage Doors |  | 51.13 |  |
 | Chamberlain Consumer 7710CB Ssr Unit Extension Rail 10-Foot For Ssr Unit - Chain |  | 64.17 | |
 | Chamberlain 10 ft. Chain Drive Rail Extension Kit 7710CB |  | 62.97 | |
 | Chamberlain 10-ft Chain Drive Extension Kit 7710CB |  | 62.99 | |
 | Chamberlain Consumer 7710CB Ssr Unit Extension Rail 10-Foot For Ssr Unit - Chain |  | 64.17 | |