Weber Rust-Resistant Griddle Insert, Spirit 300 Series, 6787 Size: 22.7" x 17.3" x 1.2" GO FROM GRILL TO GRIDDLE: Convert your Weber grill into a griddle RUST-RESISTANT COOKTOP: Rust-resistant carbon-steel cooktop has been transformed under extreme heat and pressure that case hardens and bonds the surface, reducing the ability for moisture to collect so that it is ready, not rusty, use after use. PRE-SEASONED: Pre-seasoned with food-safe oils that condition the metal for an extra boost of rust resistance and a natural, easy-release cooking surface right out of the box without waxing or oiling. SAFE FOR METAL TOOLS: Safe to use with metal tools. No use of coatings means you can flip, press, and scrape without worry. EASY CLEANUP: Rear grease slot directs grease into your grill?s grease management system, preventing splatters. EVEN HEAT: Retains heat for even, edge-to-edge griddling. WARP RESISTANT: Thick, carbon steel material is designed to prevent warping compared to thinner metal griddle surfaces. FITS: Spirit 300 Series 3 burner grills from 2016 to 2024 and Spirit 4 burner grills manufactured in 2025.