The Sommer 10178 curved door arm bolts to the straight door arm and connects the door bracket to the garage door opener carriage.
Compatible with Sommer models: 2060 evo+, 2080 evo+ and 2110 evo+, Synoris 550 (1040V000, 1043V000) and Synoris 800 (1050V000, 1053V000)
Compatible with Direct Drive models: Direct Drive 550 (1041V001, 1041V003, 1042V001, 1042V003) and Direct Drive 800 (1051V001, 1051V003, 1052V001, 1052V003)
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