The grate part number 71201 and that is $41.75 direct from Weber. You will have to tell them OVER and OVER that you have the part number or they will be asking for your grill model number, etc.
Pitmaker BBQ Safe
UDS Ver 1.5, 90 gallon Super UDS
Beat-up, rusted-out, still-cooking NB Bandera
Some thing that says Brinkman on it