Marantec Trolley Assembly (Slider)

• Replaces #8030177 and #803178
• Replacement trolley assembly for chain & belt rail assemblies
• Fits Marantec opener models: M4500M4500eM4700M4700eQ7500Q7700
• Works for 7' 8' & 10' high doors (red pull cord rope can be adjusted to length accordingly)
• Note: will not work for the Heavy Duty (2mm-14ga.) rail assembly
• Same part number as 91570