Installation step 2 install the header bracket, Installation step 3, Attach the rail to the header bracket – Chamberlain 2255-2 User Manual

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Installation step 2 install the header bracket, Installation step 3, Attach the rail to the header bracket | Chamberlain 2255-2 User Manual | Page 10 / 36 Installation step 2 install the header bracket, Installation step 3, Attach the rail to the header bracket | Chamberlain 2255-2 User Manual | Page 10 / 36
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