3) attach the t-rail to the header bracket, Installation step 3, Attach the t-rail to the header bracket – Chamberlain Series 1200 User Manual

Page 11

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3) attach the t-rail to the header bracket, Installation step 3, Attach the t-rail to the header bracket | Chamberlain Series 1200 User Manual | Page 11 / 36 3) attach the t-rail to the header bracket, Installation step 3, Attach the t-rail to the header bracket | Chamberlain Series 1200 User Manual | Page 11 / 36
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