I did a quick check and I see amazon has the from $15- $45 .
Not sure where you are but you can also check any larger gas grill seller shop. They should also have them.
This is photos of what I found in amazon.
I did see Ducane brand but these were made to sit flat or in a holder rack. I don't think I would get these because they look like they don't have enough mass for what we do with them.
You want to look for something that is about as thick as a charcoal brick !
Hope this helps!
Also check out old gasser's being thrown out at the curb !!
Sent from my iPhone using
Weber Kettle Club mobile app