The Spruce Outdoor Insert Is A One-Piece Liner That Can Be Installed In Wall Or Island Applications. Spruce Includes Corrosion-Resistant 304-Grade Stainless Steel And Powerful 1,200 Cfm Internal Blowers To Handle The Most Intense Grilling. Featuring Three-Speed Metallic Knob Controls And Directional Halogen Lighting With Pro Baffle Filters That Enhance Airflow.