Fireplaces, Heating Stoves, Flues and Chimneys - Thru-wall air for woodstove?

I heat my house with a freestanding woodstove and have noticed that it burns better with a nearby window cracked, so I want to provide an outside air supply by cutting a hole in the wall behind the stove and somehow piping? outside air under the stove to the front vent. The stove is about two feet from the outside wall; the wall is drywall over 4" studs with cedar siding on the outside. Would appreciate ideas on methods, materials, design, etc. Want something inexpensive, not too ugly. Am thinking small diameter (4" or less), maybe even two smaller pipes. Something along the lines of clothes dryer vent, with secure flap outside to close it off when not in use. Vent could come in at about floor level, perhaps run under stove (stove sits on 5" legs) and end at front stove wall, where intake vent is. Thanks in advance

Most people I talk to suggest going to the auto parts store and pick up some flexible exhaust pipe for cars/trucks. 4" may be a bit large IMO. Is there any way to connect it to your fire place? A dryer vent would not work to well because your fire will be sucking instead of blowing, but some kind of damper would be best so it would not leak cold air when its not burning.

Thanks, I didn't know about the flexible exhaust pipe--sounds like what I need to start with.

I believe its burning better because your house is airtight. Do you have a basement? Try opening a window there and leave a path for this air to reach the main floor and see if you get the same results.
If this works then you be better off creating a hole for outside air in the basement. I am also concerned about possible cold air entering the room with the intake located in the woodstove room, after the woodfire burns down.
Makeup air entering the basement will warm up some as it travels upstairs.

I believe its burning better because your house is airtight. Do you have a basement? Try opening a window there and leave a path for this air to reach the main floor and see if you get the same results.
If this works then you be better off creating a hole for outside air in the basement. I am also concerned about possible cold air entering the room with the intake located in the woodstove room, after the woodfire burns down.
Makeup air entering the basement will warm up some as it travels upstairs.
No basement; the house is built on a concrete slab. So an exterior wall is the only way to supply cold air. You got it about cold air coming in when the fire burns down: once or twice I forgot to close the cracked-open window after the fire went out and the downstairs got mighty cold