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A retainer bar assembly for use with a door or window includes a retainer bar configured for slidable coupling with a fenestration frame and slidable coupling with a sash. A retainer bar handle is coupled with the retainer bar. A retainer bar fastener assembly includes a movable bolt movably coupled

A retainer bar assembly for use with a door or window includes a retainer bar configured for slidable coupling with a fenestration frame and slidable coupling with a sash. A retainer bar handle is coupled with the retainer bar. A retainer bar fastener assembly includes a movable bolt movably coupled with the sash. The movable bolt is movable between a fastening configuration where the bolt is coupled with at least one of the retainer bar and the retainer bar handle and the retainer bar is fixed in an installed orientation relative to the sash, and a releasing configuration where the bolt is decoupled from one or more of the retainer bar and the retainer bar handle and the retainer bar is slidable relative to the sash. The retainer bar includes a retainer bar length configured to continuously couple along a sash portion from near a first sash end to near a second sash end, and the retainer bar length is configured to correspondingly couple along a fenestration frame and provide a continuous interface between the sash and the fenestration frame.

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1. A retainer bar assembly for use with a door or window comprising: a retainer bar configured for slidable coupling with a fenestration frame and slidable coupling with a sash;a retainer bar handle coupled with the retainer bar; anda retainer bar fastener assembly including a movable bolt, the mova

1. A retainer bar assembly for use with a door or window comprising: a retainer bar configured for slidable coupling with a fenestration frame and slidable coupling with a sash;a retainer bar handle coupled with the retainer bar; anda retainer bar fastener assembly including a movable bolt, the movable bolt is movably coupled with the sash, and the movable bolt is movable between a fastening configuration where the movable bolt is coupled with at least one of the retainer bar and the retainer bar handle and the retainer bar is fixed in an installed orientation relative to the sash, and a releasing configuration where the movable bolt is disconnected from one or more of the retainer bar and the retainer bar handle and the retainer bar is slidable relative to the sash to a completely disconnected position from the sash. 2. The retainer bar assembly of claim 1, wherein the retainer bar handle includes a follower surface. 3. The retainer bar assembly of claim 2, wherein the movable bolt includes a camming surface engageable with the follower surface, and engagement of the camming surface with the follower surface in the releasing configuration biases the retainer bar handle and the retainer bar away from a sash. 4. The retainer bar assembly of claim 1, wherein the retainer bar fastener assembly includes a bolt housing configured for coupling with the sash, the movable bolt is movably coupled within the bolt housing. 5. The retainer bar assembly of claim 1 comprising a biasing element coupled with the movable bolt, the biasing element is configured to bias the movable bolt toward the fastening configuration. 6. The retainer bar assembly of claim 1 comprising: the fenestration frame; andthe sash slidably coupled within the frame. 7. The retainer bar assembly of claim 6, wherein the fenestration frame includes a frame opening, and the retainer bar handle includes a handle projection extending into the frame opening while the sash in at least a partially open configuration. 8. The retainer bar assembly of claim 6, wherein the retainer bar includes one or more glider tabs slidably coupled along one or more liner rails of a frame liner coupled with the fenestration frame. 9. The retainer bar assembly of claim 6, wherein the retaining bar includes one or more engagement pins slidably received within one or more engagement recesses of the sash. 10. The retainer bar assembly of claim 1, wherein the retainer bar includes a retainer bar length configured to continuously couple along a sash portion from near a first sash end to near a second sash end, and the retainer bar length is configured to correspondingly couple along the fenestration frame and provide a continuous interface between the sash and the fenestration frame therebetween. 11. The retainer bar assembly of claim 1, wherein the retainer bar handle is integral to the retainer bar. 12. A fenestration assembly comprising: a fenestration frame;a sash slidably coupled within the fenestration frame;a retainer bar slidably coupled with the fenestration frame and slidably coupled with the sash, a retainer bar length of the retainer bar is continuously coupled along a sash portion from a first location near a first sash end to a second location near a second sash end in an installed orientation, the retainer bar is a continuous interface between the sash and the fenestration frame from the first location to the second location;a retainer bar handle coupled with the retainer bar; anda retainer bar fastener assembly including a retainer bar fastener selectively coupled with the sash and at least one of the retainer bar and the retainer bar handle, wherein the retainer bar fastener is movable between a fastening configuration configured to fix the retainer bar with the sash in the installed orientation, and a releasing configuration configured to release the retainer bar from the sash for relative sliding movement therebetween. 13. The fenestration assembly of claim 12, wherein the retainer bar fastening assembly includes: a bolt housing coupled with the sash, andthe retainer bar fastener includes a movable bolt, the movable bolt is slidably coupled within the bolt housing, and the movable bolt is slidable between the fastening configuration where the movable bolt is coupled with at least one of the retainer bar and the retainer bar handle, and the releasing configuration where the movable bolt is decoupled from one or more of the retainer bar and the retainer bar handle and the retainer bar is slidable relative to the sash. 14. The fenestration assembly of claim 13, wherein the retainer bar handle includes a follower surface and the movable bolt includes a camming surface engageable with the follower surface, and engagement of the camming and follower surfaces biases the retainer bar handle and the retainer bar away from the sash. 15. The fenestration assembly of claim 12, wherein the retainer bar fastener includes a pin selectively coupled with the retainer bar handle, the pin extends through a handle projection of the handle bar and the sash in the fastening configuration, and the pin is decoupled from at least the sash in the releasing configuration and the retainer bar is slidable relative to the sash. 16. The fenestration assembly of claim 15, wherein the pin includes a screw. 17. The fenestration assembly of claim 12, wherein the retainer bar fastener assembly includes: the retainer bar fastener including a detent projection coupled with one of the sash and the retainer bar handle, anda detent seat coupled with the other of the retainer bar handle and the sash, the detent seat is sized and shaped to receive the detent projection, and one or more of the detent projection or the detent seat are sized and shaped to deform and grasp the other of the detent seat or the detent projection. 18. The fenestration assembly of claim 17, wherein the detent seat includes deformable socket arms, and the detent projection includes a flared end sized shaped for reception between the deformable socket arms. 19. The fenestration assembly of claim 17, wherein the detent projection includes a biased detent projection along a first side surface of the sash or the retainer facing a second side surface of the other of the retaining bar and the sash, and the detent seat is positioned along the second side surface. 20. The fenestration assembly of claim 12, wherein the retainer bar fastener assembly includes: the retainer bar fastener including a retainer slide slidably coupled along the sash, anda slide seat in the retainer bar handle, the slide seat is sized and shaped to receive at least a portion of the retainer slide in the fastening configuration. 21. The fenestration assembly of claim 12, wherein the retainer bar fastener assembly includes: the retainer bar fastener including a pawl on one of the sash or the retainer bar handle, anda retaining lug on the other of the retainer bar handle or the sash, wherein the pawl retains the retaining lug in the fastening configuration, and the retaining lug is positioned beyond the pawl in the releasing configuration. 22. The fenestration assembly of claim 12, wherein the fenestration frame includes a frame opening, and the retainer bar handle includes a handle projection extending into the frame opening while the sash is in at least a partially open configuration. 23. The fenestration assembly of claim 12, wherein the releasing configuration includes the retainer bar fastener disconnected from one or more of the retainer bar and the retainer bar handle and the retainer bar is slidable relative to the sash to a completely disconnected position from the sash.