Curved door arm that attaches the garage door opener to the garage door. This curved door arm is used with many model Genie garage door openers. Compatible with Genie model garage door openers; PowerLift 900, PowerMax 1200, PowerMax 1500, Excelerator , MachForce Connect, SilentMax Connect, StealthDrive 750, SilentMax 550, SilentMax 750, QuietLift 550, StealthLift 500, Chain Drive 750, Chain Glide Connect, SilentMax 1000, SilentMax 1200, IntelliG 1000, IntelliG 1200, ReliaG 650, ReliaG 850, 2562, 3062, 4062, 2564, 2568, 3064, 4064, 1028, 2028, 3020H, 3024, 4024, 3022, 3042, 4022, 4042, 1035, 2035, 2036, 2055, 3035, 3055, 7035, 7055 If you do not see your model on this list please check with Genie for compatibility