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October 14, 2010
Recently, Pemko has made some design changes to the 434 Automatic Door Bottoms to improve the STC performance. This change will affect the door prep for mortise applications. Before making a mortise in the bottom of wood doors, please note the change in the case dimensions as well as which version of 434 you may have in stock.

Please direct any questions you may have to:

Tom Rose
Technical Director
901.261.8129

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