This two-piece Closure Bolt is for 2-3/8"and 2-3/4" backset doors with jambs up to 1-1/4 thick, right or left hand swing. It can be used on interior doors and exterior door to eliminate sag and to secure the door from manufacturing through installation. 

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The DF2 Closure requires a 1" diameter or a 3/4"x1" rectangular hole through the jamb. The two parts are supplied in a connected set for quick installation and ensure an equal number of matching parts are supplied in each box.