YOW 225/225 H Mullion Options STACKING MULLION OPTIONS (PROJECT OUT, 4-BAR HINGE) 1/2 " to 3/4 " 2-1/2 " [63.5mm] AS-4231 1/2 " to 3/4 " E9-4427 2-1/2 " [63.5mm] E9-4518 AS-4231 3/4 " E9-5111 1/2 " Min. 1-13/16 " [46.0mm] 2-1/2 " [63.5mm] SCALE: 1/2 SIZE 1 E9-4562 2 Note: 9/16 " Laminated Glazing Option Available. Effective Date: June 2, 2021 | 05-1002-11 Page-53