"Hi Chris--nice job on the column!
In his most recent document on the topic, BSI-091: Flow-Through Assemblies, Dr. Joe explains that vapor open membranes, Class II and III (For more on Vapor Retarder Classification, read this…"
"Another reason to avoid insulated vinyl siding, besides the middling R value improvement, is that it eliminates the air space behind the vinyl siding. The air space in vinyl and aluminum siding allows for ventilation drying of moisture that…"
"Assuming that you're mainly interested in the total air handler flow, and you have access to the filter slots, I'd suggest looking at Energy Conservatory's TrueFlow. It's a flat plate with openings; it has adapter plates…"