YOW 225 TU/TUH Operable Window System STACKING MULLION OPTIONS (PROJECT OUT, 4-BAR HINGE) 3/4" (Typ) E9-4518 1/2" Min. 1-13/16" [46.0mm] E9-4562 2-1/2" SCALE: 1/2 SIZE 0 1 Page-54 2 [63.5mm] 05-1003-11 | Effective Date: October 1, 2020