Brand New Skytech FK-180-ESC replacement. GFK-160B Time Controlled 180 CFM Fireplace Blower Fan Kit with Hi/MH/ML/Lo/OFF Speed Control. The GFK-160B Time Controlled 180 CFM Fireplace Blower Fan Kit with Hi/MH/ML/Lo/OFF Speed Control. By Skytech is designed to circulate warm air through many hearth products in the industry, and also allow…