How exactly did you mount yours ? Unit open or closed ? I seem to recall you have to open the vent at some point - to secure the screws through the vent frame. So drill holes with unit closed, open unit to open vent, then lower unit to finish mounting ? Or am I over-analyzing ? I've had a vent for some time but can't find the time to mount it. The TM is in my carport so can't really open it. Thanks for any guidance.
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