When installing the grill into an island made of combustible materials, an insulated sleeve is required. Made in the USA and constructed of heavy-duty 18-Gauge commercial grade stainless steel. PFIS27 | 27" grill 30" W x 11-1/8" H x 24-1/2" D PFIS48 | 48" grill 51" W x 11-1/8" H x 24-1/2 D PFIS30 | 30" grill 29-1/4" W x 9-3/4" H x 21" D PFISSB | Single Side Burner 15-3/4" W x 11-1/8" H x 14 D PFIS36 | 36" grill 39" W x 11-1/8" H x 24-1/2" D PFISDSB | Double Side Burner 15-3/4" W x 11-1/8" H x 24-1/2 D PFIS42 | 42" grill 41-1/4" W x 9-3/4" H x 21" D