Music City Metals 20502 Cast Iron Burner Head Replacement for Gas Grill Model Arkla 32431-S Listing is for 1 twin burner head. 15.875 x 8 inch cast iron H twin burner with 1.25 inches offset gas inlets Used with venturi 70201, 70301, 70401, 708LR, 709LR, 71202, 72401, 72502, 725LR, 72601, 72902, 73002, 75052, 75062, 75072, 75702, or 75812.