Most restaurant owners in Connecticut assume the hood crew has covered the whole exhaust system once the filters come out clean and the canopy shines. The walk-in exhaust connections in a CT restaurant are where grease quietly builds up out of sight. These joints, transitions, and short duct runs sit behind panels, above ceilings, and beside walk-in boxes, so they rarely get the attention they need. Missing them is one of the most common ways a clean-looking kitchen still fai