Premier portable heaters can be used to provide temporary simple heat or simple air circulation. This portable heater can be used indoors or ducted in from the outside.  Select from liquid propane easy-to-switch dual fuel models. L.B. White has perfected every aspect of portable premier construction heaters design to withstand harsh working environments. This has led to their reputation for reliability, durabilityand serviceability in the field. When the comfort and safety of your workcrew is at stake you want the leader in portable heating equipment for any commercial, industrial or construction job.