The Chamberlain 41C5141-1 square rail chain drive trolley assembly is compatible with all Chamberlain and Sears Craftsman chain drive garage door openers with square rails. This complete trolley assembly replacement includes an inner slide. If you have installation questions, contact our staff by email, Live Chat or phone.
- Complete square rail chain drive trolley assembly
- Includes inner slide
- Compatible with all Chamberlain, Sears Craftsman chain drive garage door operators with square rails