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Written by Bill Meyer, Cambridge Applications Engineer

An industrial retrofit contractor who has used Cambridge S-Series heaters for years asked us to provide discharge ductwork. Some of the heaters were vertical stand mounts and some were horizontal stand mounts. The duct we provided was sized to fit the discharge opening of the heater for the vertical mount. For the horizontal mount, our standard downturn was basically rotated 180° and the duct was sized for the discharge opening. 

Our contractor commented that he liked the duct. However, it would be easier to work with and be more stable if it was redesigned with a broader, more square, cross section.

Cambridge decided to redesign the upturn and the ductwork to make it easier to work with in the field. The upturn and 3’, 4’ & 5’ vertical duct extensions have since been added to our standard product offering.

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Cambridge has been actively supporting our contractor partners with industrial retrofit heating/ventilating projects for over 40 years. Projects include: aluminum rolling mills, automotive/farming/construction/mining equipment manufacturers, tire plants, electrical appliance & motor manufacturing, corrugators, insulation product manufacturing, steel processing plants, bottling & canning plants, warehousing & distribution centers.