ZLINE 36 in 400 CFM Convertible Hand hammered Copper Wall Mounted Range Hood Item #24007 Model #10420 thick gauge steel base is designed thick gauge steel base is designed with an opening that provides fast access to the motor and other internal components to streamline service trips Reliabilt aluminum single hung windows are manufactured from an extruded aluminum sash and main frame that is durable and maintenance free and includes an easily removable screen that keeps insects out 400 CFM Air Flow (highest speed setting) efficiently moves large amounts of air away from your cooking area Ductwork easily connects to the top of the range hood for external venting