Chain Drive Extension Kit
- 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
- Includes replacement chain/cable, rail-
- and all necessary hardware
- SIZE:10 Ft.
- Weight: 32.00 lb.
- UPC: 012381077106
- Manufacturer Part No: 7710CB
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