Need Link for Orifices

I just bought a small off-brand burner that I intend on using for my mash tun.  It has an orifice for propane, but I need to use house gas.  Are there any links for replacement orifices?

Tejas Smokers, or its sister websites, have replacement orifices.  FYI, I bought a replacement orifice from them and ultimately drilled out the orifice to get a bigger flame.