Flamesources dot com conversion kit. Factory instructions are included. The size of the orifices at the shank is 0.340 inches at the outside of the threads for the three main burner orifices and 5.92 mm for the side plate (stove style) burner, so measure your orifices carefully before ordering. Many bar-b-ques use these types of orifices and they might retrofit a number of other brands.  These are made for that specific Weber model with side control knobs.

This set includes 4 orifices for a grille with 3 three main burners and a side plate burner. It is usually necessary to swap the regulator as part of the conversion. These orifices are specifically bored for use with an North American Weber grille using a common and inexpensive regulator that you can purchase at Home Depot, Lowes or Ace with a propane tank mounted underneath the grille. Please contact seller if your grille or installation is different. FOB Origin.