For Procom Automatic/Manual Thermostat Blower - Model PF06-YJLF-B, PF06-YJLF-F, PF06YJLFB. Highlights: Material: Metal Built In Timer Oxygen Level Control Heat Output: 10000 BTU Automatic Delay Shutoff can be used indoors and outdoors Works with some ProCom Vent-Free Space Heaters Over 10,000 BTU For Infrared & Blue Flame Heaters.