Entrance to garden room I built is 5 feet long 3 feet wide....
the garden room is 8 feet long by 6 feet wide and strong 6 foot hight.
the duct WILL only have ONE bend to turn to go to the 8 Inch chim. Hole. from the garden room. so I thought 6 inch duct runs 5 feet from garden room threw the rock wall threw the entrence. STOP....install - Fan....install -Carbon filter inside the duct now that runs 4 feet STOP... Make a turn....STOP.... now runs 3 feet to the 8 inch hole that can not be changed. and up the chim.
I could make a 6 inch carbon filter and drop that in an 8 inch duct out side the room,
and NOT reduce it at all......
Or I could make a 4 inch carbon filter stuff it in a 6 inch duct make the one bend and reduce it to the 8 inch pipe that is there already.
the fan is 309 cfm and I kind of figured that would totaly exchange the air in the garden room in 2 Min or under doing it the email way with the 3 passive intake idea. with a nice fan to circulate the air. I should mention I do infact have an access to fresh air intake
its just so blasted cold here so much I fear that COLD air could kill my plants. like leaving the door open to the house will frost bite anything to close to the open door.
so with all this said I will have to ask again
fill in the blanks...
so with a 6 inch fan....outside enclosed garden space
you insert a _______ size carbon filter.......
into a _________ size duct......
that hooks into a 8 inch duct hole.......
that go's up a 2 story building.....