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Eurospec Enduro 4 Inch Grade 13 CE Ball Bearing Security Hinges, Satin Stainless Steel - HIN1433SEC/13 (sold in pairs) from Door Handle Company
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Zoo Hardware 4 Inch Grade 201 Dog Bolt Or Security Door Hinge, Satin Stainless Steel - ZHSSDB243 (sold in pairs) from Door Handle Company
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