YOW 350 TU / TUH Mullion Options STACKING MULLION W/ BUTT HINGE 2-1/4" [57.2mm] E9-5111 AS-4428 BE9-4925 E1-1536 1/2" [12.7mm] OUT 1-1/4" [31.8mm] OUT 1/2" [12.7mm] 3" [76.2mm] Page-56 05-1016-06 | Effective Date: October 1, 2020