Weber # 63014 Charcoal Grate for 22.5" Smokey Mountain Cooker. Model # 731001. Measures 18 3/8" . Please visit Weber's website to ensure you order the correct parts for your specific grill. It is best to look up by serial #. The following link will also help you find the alpha numeric number. http://help.weber.com/schematics/#serial-number
Weber Charcoal Grate
Measures 18 3/8"
Fits 22.5" Smokey Mountain Cooker