Abstract: A method for filling a threshold gap in a floor of a fenestration can include translating a fenestration member along the threshold of the fenestration, actuating a threshold filling assembly in response to translation of the fenestration member, and moving a threshold filler with the filling assembly into the gap to fill the gap. A fenestration threshold filling assembly can include a filling component sized to fit a gap in a fenestration threshold, a support connected to the filling component, and an assembly configured to move the support between a retracted position and an extended position.

Abstract: The system includes a gear mounted for rotation relative to the fenestration member. A mechanical linkage connects the latch control member and the gear such that the gear is rotated from a first position, where the latch is disengaged, to a second position as the latch is moved to engage the fenestration member frame. A rack in engagement with the gear is mounted to a first bar for linear movement in a given direction as the gear is rotated. A first triangular member moves with the rack. A second triangular member attached to a second bar cooperates with the first triangular member to move the second bar in a direction substantially perpendicular to the direction of rack movement. A gasket moves with the second bar to a position abutting the adjacent surface to automatically seal the member to the adjacent surface as the member is latched.

Abstract: The system includes a gear mounted for rotation relative to the fenestration member. A mechanical linkage connects the latch control member and the gear such that the gear is rotated from a first position, where the latch is disengaged, to a second position as the latch is moved to engage the fenestration member frame. A rack in engagement with the gear is mounted to a first bar for linear movement in a given direction as the gear is rotated. A first triangular member moves with the rack. A second triangular member attached to a second bar cooperates with the first triangular member to move the second bar in a direction substantially perpendicular to the direction of rack movement. A gasket moves with the second bar to a position abutting the adjacent surface to automatically seal the member to the adjacent surface as the member is latched.