【Dimension】- 21.5 x 15.3 x 0.5 inches ( L x W x H ) Material: Matte Cast Iron Fits Weber Q200, Q220, Q2000 series, Q2200, Q2400, 53060001 grill models. Replacement for Weber 7645 If your looking to replace your Weber Q200, Q2000 Series, Q2200, Q2400 grill parts, this cooking grid grates is the excellent accessory for you 【How to Avoid Rust？】 (1) Make sure that you scrape your grates after each use; (2) Season them by brushing with oil after each use; (3) Leave the dampers open a bit so that condensation does not collect in the grill; (4) Put the lid back on your grill when it is not in use; (5) Cover the grill when it is not in use; (6) If you need to store your grill for a long period of time, heavily coat them in cooking oil, wrap them in a plastic bag and store in your covered grill