1. Which is better, round or square support boxes?
2. How much wider than stovepipe are support boxes?
3. For floor and roof trusses spaced 24" OC, are some manufacturers' ceiling support boxes and attic radiation shields easier to install than others, or are they all about the same? What about installation of the attic radiation shield near an eave where there is no headroom to work in the attic?
2. How much wider than stovepipe are support boxes?
3. For floor and roof trusses spaced 24" OC, are some manufacturers' ceiling support boxes and attic radiation shields easier to install than others, or are they all about the same? What about installation of the attic radiation shield near an eave where there is no headroom to work in the attic?