I use the tray type smoke generator at 2400 ft. Smoke is supplied to a 22 cft product chamber via an external firebox. By using a 10 ft. run from the firebox to the product chamber and 6 ft, chimney, once a draft is started, no fan is needed.
Small fan being used to assist in getting draft started.
Edited by Mr T 59874 - 1/11/16 at 3:21am