Pellet Stove Pipe & Exhaust wall mount (Lakeport)

I am in desperate need of getting help with obtaining a firebox Pellet Stove, this firebox goes inside the wall and allows you to properly vent the exhaust pipe for the Pellet Stove.
If anyone can please help me get one of these, then I would graciously appreciate it.
Its getting extremely cold outside and I need to get better heat in the home, for which the furnace is not doing.