| 摘要 |
An astragal assembly is disposed between doors of a double-door set mounted in a door frame of a building to seal between the doors. The astragal assembly includes an astragal attached to one of the doors and a lock block assembly slideable within the astragal. The astragal defines a channel and the lock block assembly includes a body slideably disposed in the channel. The lock block assembly includes a lift boot coupled to and resiliently extending from the body. The lock block assembly is slideable between an extended position and a retracted position. The lift boot includes a fin extending away from the body. The fin includes a first and second lateral portion spaced from each other and a primary portion extending from the first lateral portion to the second lateral portion for sealing against the door frame in the extended position to prevent elements from entering into the building.
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