Patent ID: 7878559

Claim:
A lock block assembly for sliding between a retracted position and an extended position along a channel of an astragal disposed between a semi-active door and an active door of a double-door set mounted in a door frame, said lock block assembly comprising: a body for slideable disposition along the channel of the astragal and including a distal end; a lift boot coupled to and resiliently extending from said distal end of said body and including a fin extending away from said distal end of said body; said fin including a first and second lateral portion spaced from each other defining a cavity therebetween and a primary portion extending across said cavity from said first lateral portion to said second lateral portion so that said first lateral portion, said second lateral portion, and said primary portion resiliently bend for conforming to seal against the door frame in the extended position; wherein said lift boot includes a platform coupled to said distal end of said body with said first lateral portion, said second lateral portion, and said primary portion coupled to and extending from said platform defining said cavity between said first lateral portion, said second lateral portion, said primary portion, and said platform; and wherein said platform defines an aperture between said first lateral portion, said second lateral portion and said primary portion for receiving a bolt that engages the door frame in the extended position.