... April 2008All the products you need forEngineered Kitchen Ventilation Systems. Make-Up Air & Packaged RooftopsDirect Gas-Fired Units[ 10 ]XDG and XDGK models shall ... kitchen hoods, exhaust fans, dedicated make-up air, packaged rooftops, controls, variable volume systems, fire suppression, utility distribution and more.[ 2 ]Comfortable energy efficient kitchen ... combination package simplifies installation and reduces field labor costs for kitchen ventilation systems. The pre-engineered design ensures that the supply fan, exhaust fan, curb and combination...