Amazon.com : Double Grilling Side Burners for Outdoor Kitchen, 2 * 15,000BTU Liquid Propane Burners, Duty Heavy 304 Stainless Steel, Built-in Side Burner for BBQ Island Grill, with Natural Gas Kit :
Lion Stainless Steel Double Side Burner | Lion BBQ Direct
Napoleon Prestige Pro 825 Freestanding Gas Grill With Infrared Rear Burner, Double Sear Burner And Side Burner | Extreme Backyard Designs
Alfresco Built-In Dual Side Burner | Barbeques Galore
Amazon.com : Lion Premium Grills L1634 Natural Gas Double Side Burner, 26-3/4 by 20-1/2-Inch : Built In Grills : Patio, Lawn & Garden