Range hood insert assembly

A method for installing a range hood insert assembly, the method comprising:

• providing a range hood insert assembly having a chassis having a top wall, a bottom wall, a front wall, a rear wall and a pair of side walls, and defining a compartment, wherein the bottom wall of the chassis defines a vent and the top wall of the chassis defines an exhaust opening;
• providing a smoke collecting box connected to the top wall of the chassis about the exhaust opening and defining an interior fluidly connected to the compartment of the chassis, the smoke collecting box having a top surface defining an opening for being connected with a conduit, a front surface, a rear surface opposite the front surface and a pair of side surfaces;
• a connection flange overlying the rear surface of the smoke collecting box, the connection flange having a top portion extending above the smoke collecting box and a pair of side portions extending beyond the side surfaces of the smoke collecting box, the connection flange defining a plurality of orifices;
• positioning the range hood insert assembly against the wall;
• and
• driving a plurality of fasteners through a plurality of the orifices of the connection flange and into the wall such that the plurality of fasteners hold the range hood insert assembly to the wall.