Attached is a better view of the entire setup. There is a 4" pipe (smaller)on the right, this is the fresh air intake from the outside, the ducting tee's to the right to the master bedroom upstairs (once again this morning I was told by my wife "it is always going to be hot in here, isn't it?"
) and to the left to a finished 120sqft office in the basement and behind the ductwork is the exhaust to chimney. The super-ebay-manometer-deal is on the wall on to the left of the stove.
Thanks for asking.
Go Sox(of the red variety)!