Weber Rust‑Resistant Outdoor Griddle Insert, Full‑Size – Pre-Seasoned Carbon Steel Griddle for Searwood & Large Spirit Series Gas Grills - Grill Accessory

https://www.amazon.com/dp/B0BJY6L7JV I just bought this over a week ago. can confirm it's the right one. As someone else pointed out. if you are doing the 600, it's the whole thing, it's only half if you have the XL.