Make-up air is additional air that you may require if you run a high-CFM hood often or for long periods of time. If you suck too much air out of your kitchen, it creates negative air pressure and will affect how your hood functions. To address this issue, purchase a make-up air kit that directs fresh air air from outside your home, which will recirculate throughout your kitchen.
We do not sell make-up air kits at this time.