It is a Kenmore gas grill that and I use it atleast 2 times a week. I have some cast iron pans and dutch ovens. So I know the trouble it can be to be maintain but I do like the even heat distribution that cast iron provides, What I had in mind was getting two smaller grates to replace the larger grate. I thought this way it would be easy to replace a smoker pouch, for cooking indirect over long periods of time. I also heard a tip that you can place cast iron grates in the oven when you self clean it to help keep them clean.
I bought these pair of cast iron grates at Home depot for $25.00. I’m using them on an old Thermos gas grill. They work very well. I have a 2-3 inch gap between the 2 halves, but I don’t mind it. That gives me an opening to add more wood chips. See the measurements on their web site and compare them to your grill. www.homedepot.com I hope this helps.