Cooking grid with hole - ss
19 1/4 x 13 3/16(ss) for models 720-0061lp/99ng/145lp/145ng/163/336. production 506s2
If out of stock can use mcm5s612 but is 1" shorter and is a 2 pack.
Buy this part and as many parts as you like and pay only $8.99 shipping, within the Contiguous United States.