6" PLUG-IN UNIT. MATCHING 8" UNIT IS WB30M2. (RETAIL) SUGGEST REPLACE BURNER BLOCK PART NUMBER WB17X5113 | Part Number WB30M1 replaces  340523,  WB30M0001,  WB30M1-12PK,  WB30X5071,  WB30X5109,  WB30X5119,  WB30X5121,  WB30X5129