Print-In-Place Window Restrictor Stay
A print-in-place sliding restrictor stay that limits how far a window sash or door can open: a 136 x 28 x 8 mm slotted arm with a captive Ø10 mm sliding post trapped in an internal T-slot at 0.4 mm clearance, giving 85 mm of travel (screw spacing 58 mm closed, 101 mm at the hard stop). Both mount holes are 4.5 mm for a #8 wood screw or M4, and an integral 1.8 mm leaf-spring detent snaps over the flange near the end of the slot so the window is held at the restricted opening instead of drifting shut.
mechanism window restrictor print-in-place