Mercer duct connectors are not to be confused with wrap around Fiberglass or other light-weight materials used in heating and ventilating systems. Our hand-built duct connectors are another heavy duty industrial product. They are only used in high pressure, high temperature air applications or where the gas is some industrial by-product that is highly corrosive and the duct connector must be leak proof.

Duct connectors can be round or conical rectangular or square, fabricated as reducers or in some cases the transition piece from rectangular or square to round ducts. Flanged connectors are furnished with steel backup rings or plates, and where the outside exposure demands it, steel may be hot dipped galvanized or fabricated from stainless steel. Since there are no standard duct flanges, they are usually drilled to specific drawings. In some cases because the mating flanges cannot be properly measured or the existing holes follow no particular pattern, we furnish the assemblies with both the rubber and steel flanges undrilled for drilling in the field.