J&D Manufacturing’s Typhoon exhaust fan’s heavy duty 18 gauge galvanized housing and venturi are the perfect support structure for the 12 gauge motor mount. All fans come with aluminum shutters on the intake side, with tie bars and poly shutter clips that hold the shutter tight to the frame for less vibration. With a quick twist of the poly clips, the shutters can be removed for easy cleaning. Cone models include a safety cone guard; other models include a 12 gauge 1- by 2-inch mesh guard that is hot dip galvanized after welding.