Height of support box vs ceiling slope

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metelskiy

New Member
Nov 18, 2021
15
Beaverton, OR
1. I’m trying to figure out if my 11” support box is the right size for my 6/12 pitch roof/ceiling. I can’t find the table in the manual
2. When I’ll be installing support box for 6/12 roof, my understanding is that I’ll need to cut support box to match the roof pitch so that when box is installed it is basically touching the roof, is that correct? And in that case my black pipe connection to support box need to be at least 2” below lowest ceiling point.