For many years, duct products have often involved significant on-site measurement and construction, bringing certain advantages and risks. Here, that practice is com-pared to the use of listed ductwork, with an eye on duct integrity, hood connections, clearance to combustibles, fire ratings, and more.

This project team left nothing to chance when it came to designing a five-story mixed-space facility for a Chicago gaming company. They also dealt a full hand of space-specific tactics: upgraded DX units, a dedicated variable-speed kitchen exhaust system, underfloor air, and better motors and drives improved the odds for efficiency. Pull the handle on this project story to get to the payoff.

Leakage caused by modern cleaning techniques, evolving codes, increased airflow requirements ... kitchen ventilation design has become more complicated than the old sizing and design challenges. Of course, they’re still around, too. Grease is the word, so review these tips to keep it from popping up in the wrong places.