Built-in Sleeve, Stainless Steel, accepts DPA150 or DPA151 (N,P) When adding a Broilmaster built-in side burner, such as the DPA150 Blue Flame or DPA151 Infrared, to your outdoor built-in island, the DPA152 sleeve or surround is required. It is stainless steel and is 14 3/4" x 14".