bbq factory&reg; JGX502 Porcelain Cast Iron Cooking Grid Grate Replacement for Select Gas Grill Models by Ducane, Grill Chef and Others, Set of 2 Porcelain Coated Cast iron cooking grids, Dimensions: 14 3/8" x 18" Each and 28 3/4" x 18" Total Fits Ducane 4100, Grill Chef GC7550, Uniflame GBC850W, Uniflame GBC850W-C, Uniflame GBC850WNG-C Uniflame Models: GBC850W, GBC850W-C, GBC850WNG-C, GBC-850W, GBC-850W-C, GBC-850WNG-C Replaces Part Numbers: 55-08-167, 5508167, 30501009