The williams p322398 is a pilot assembly for use with williams gravity direct vent wall furnaces.
Williams gas furnace pilot light.
Depending on the size of your room or home and your climate a williams furnace may heat your entire home or can be used to heat zones in your home.
They are not attached to room ducts but most models must be vented.
Your total source of williams furnace company replacement parts.
It can be used with the 14 000 22 000 and 30 000 btu natural gas models.
Williams furnaces are mounted on a wall or free standing in the room.