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The tube rail belt extension kit is to be used in conjunction with the 5 piece rail system for the SilentMax 550 when the door measures 8 ft in height. The extension kit rail replaces the end section of the 5 piece tube rail system. Installation is easy with no additional assembly hardware.
- WORKS ON 8 FT HIGH GARAGE DOORS: Enables tube style genie belt drive garage door operators to fully open 8′ tall doors.
- COMPATIBILITY: Works on ultra-quiet Genie belt drive models: 20553053305570557155.
- EASY TO INSTALL: Works with the rail assembly included with the garage door opener and easily snaps together for installation.
- INCLUDES: rail extension 8 FT belt easy-to-follow instructions.