The Chamberlain 8 ft. Chain-Drive Extension Kit is compatible with Chamberlain's chain drive garage door openers. It comes with a rail extension and replacement belt and can be used with garage doors up to 8 ft. high. Easy to install.
- For use with garage doors up to 8 ft. high
- Works with all chamberlain chain-drive models
- Kit includes rail extension and replacement chain
- Comes ready to install with complete instructions