The insert hood unit and the blower unit are shipped in two packages. The blower unit should be installed above the ceiling in the attic. The hood insert improves ventilation and lighting over your stove. Built with high-quality 1mm thick stainless steel with brush finishing. Perfect for 36” kitchen ranges that fit snugly into the wood hood. The blower unit is mounted in the attic. with a 6” round top exhaust vent (no rear vent). Caution: Please check your existing venting duct before purchasing, there are rectangle or round ducts of different sizes. Ducts are not included. Sloped view blue highlighted electronic buttons with 2 of 3w energy saving cold bright LED lights. 1 motor in the blower unit. The blower unit needs to be installed in the attic to reduce the noise in the kitchen.12 ft split control cord and power cord with plug are included. 4 layers dishwasher safe commercial style stainless steel/aluminum mesh filters with built-in latch. Stainless steel for the 1st layer and aluminum for the remaining 3 layers, which provide good air permeability, better suction, and less noise compared to baffle filters. The oil is contained in the mesh filters; no oil holders are needed.