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Frost King Acquires PortaSeal

Mahwah, N.J.-based Frost King (Thermwell Products Co. Inc.) has acquired PortaSeal LLC of Morristown N.J. 

PortSeal makes weathersealing products, including Gara-Seal, a rigid vinyl strip with a flexible vinyl flange, which seals the top and sides of garage doors.

Both companies in the transaction are privately owned and operated: PortaSeal by Stanley Garbowy; and Thermwell by David and Mel Gerstein, twin sons of one of the two founding brothers.

The PortaSeal product line will be marketed in conjunction with Thermwell’s best known brand, Frost King, famous for weatherstripping and pipe/duct insulation.    

In addition to Frost King, Thermwell’s family of products now includes Mortite rope caulk; W. B. Marvin adjustable metal window screens; Seal-Rite automotive weatherstrip; Regent tapes; Lever slitting machinery; Filmco polyethylene drop cloths and trash bags; and Kraver screening. 

Thermwell has offices and factories in Mahwah, N.J., and Sparks, Nev., with production and distribution facilities throughout the country.

 


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