Eclipse Model SER Single Ended Recuperative burners incorporate the components of a tube firing burner system in a compact package. The SER burner is a nozzle mixing burner and recuperator coaxially mounted inside a single-ended radiant tube. Combustion air entering the SER burner is preheated in the recuperative section by exhaust gases providing higher efficiencies than stand alone burners. SER burners are available in four diameters from 3-1/4" to 7-1/2". Radiant tube length is tailored to the application.