This carriage assembly replaces the carriage on compatible chain drive Genie operators. The carriage runs up and down the rail, attaching to the innerslide on the chain to open and close the garage door.

• Works on the units listed below that used the T-Rail 
• Compatible with Models ProMax®: PMX 300-IC/A, PMX 500-IC/A, PMX 300-IC/B, PMX 500-IC/B, IC250, IC250/B, PMX700, PMX1200, GPS700IC, GPS1200IC
• Genuine Genie replacement part