12-3/4" long cast iron bar burner (length measurement is total, "tip to tip"). The width measured across the top of the burner is  2-1/8".  The venturi pipe extends 3-3/4" from the main burner body and has a 1/2" diameter hole for the gas valve orifice stem.  Features a "tapered barrel body" and a mounting peg that is 10-7/8" from the end of the venturi pipe (valve end) to the center of the peg.  Mounting cotter pin is included.  Fits many Brinkmann, Sears/Kenmore and other brands.