Photo 1 of Genie Chain Drive Garage Door Opener 8ft Rail Extension Kit - Extends Your Tube-Style Chain Drive Rails to Fit an 8-Foot Garage Door - Compatible with All Genie Tube-Style Chain Drive Models

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Photo 1 of Genie Chain Drive Garage Door Opener 8ft Rail Extension Kit - Extends Your Tube-Style Chain Drive Rails to Fit an 8-Foot Garage Door - Compatible with All Genie Tube-Style Chain Drive ModelsPhoto 2 of Genie Chain Drive Garage Door Opener 8ft Rail Extension Kit - Extends Your Tube-Style Chain Drive Rails to Fit an 8-Foot Garage Door - Compatible with All Genie Tube-Style Chain Drive ModelsPhoto 3 of Genie Chain Drive Garage Door Opener 8ft Rail Extension Kit - Extends Your Tube-Style Chain Drive Rails to Fit an 8-Foot Garage Door - Compatible with All Genie Tube-Style Chain Drive Models