Trolley

Here’s a concise summary of the LM trolley assemblies with their key features:

1. LM 41A3489 – Chain Drive Trolley:
2. LM 41C4677 Residential Trolley Assembly: Screw-Drive Trolley.
3. LM 41A6262 Assembly Trolley 3 Pcs: Screw-Drive Trolley, compatible with models 3130, 3240.
4. LM 41B3869-1 Residential Trolley Assembly:

These trolley assemblies are designed for different types of garage door openers, including chain drive and screw drive systems, providing smooth operation and compatibility with various models.