Check the listing for details. Eclipse Single Ended Radiant (SER) Tube Burner - SER3, 600-350NNST1050UM1250. Condition: Used. Listed at 2250.00 USD. Eclipse SER3.600 Burner PN: 600-350NNST1050UM1250 SER3.600 Eclipse Model SER Single-Ended Radiant Tube 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. The ceramic combustor yields high efficiency and long life. The insulated exhaust housing and mounting extension keep the working environment cooler and more comfortable. Burner Tube ID:1-11/16" OD: 3-5/16" Length: 3-5/16" Portion between tube and burner: 1-1/4" Tube Dia: OD: 3-13/16" Length: 15-5/8" Burner Length (between the end of tube to the end of burner tip): 4-3/8" Insertion Length: 20-13/16" Bolt Holes: 4 1/2" Mounting Holes