Commercially, a smoke flap can take the form of a metal, tin, or other alloy and can be manipulatable by hand or lever, and appears in home chimneys, stoves or boilers.
Smoke flap vents are designed to allow for adequate indoor heating especially where indoor fireplaces are present, as well as to regulate steam, smoke and heat pressure output in devices such as chimneys, stoves, or boilers.
The tipi smoke flap vent is attached in a continuous piece to the cured hides that cover the exterior of the large teepee housing structure.
In the summer months the vent may remain open to a view of the night sky and to harmonize with the warm temperatures.
In the daylight hours a tipi owner would hoist the vent open for additional lighting and also at the commencement of a newly built fire.