The build quality of this unit is exceptional. Very solid unit, filters are heavy duty and hood mimics commercial kitchen exhaust hoods. Very simple to install and Cosmo made it even easier by having a templete for the cutouts and having a power cord ready to plug in. 4 star not 5 simply because the back is exposed with my kitchen setup and would’ve like the gray panel in the back to also be a solid sheet of stainless steel.