If you are looking for a new Beckett 51771GU Oil Burner Ignition Transformer you might be interested to know that it weighs less and is smaller then the standard iron core Beckett transformers This type of oil burner ignition has a peak voltage output that doubles the standard Beckett iron core transformers.The Beckett 51771GU Oil Burner Ignition Transformer works in cold oil or delayed spark conditions.The Beckett 51771GU Oil Burner Ignition Transformer will work on 120 Volts @ 60Hz. The measurements are 4 inches in width and the Depth is 5 27/32 inches.