YOW 350 TU / TUH Installation Options E9-4578 BE9-4581 Head With Receptor (JambSimilar) E1-1971 Head With E1-1971 Twist Anchor (Jamb & Sill Similar) Head With Flat Filler E1-5201 @ Anchor E3-0032 for Backer Rod SUpport (Jamb & Sill Similar) Page-52 05-1016-07 | Effective Date: June 2, 2021 3/8 " 1/4 " Min. [6.4mm] 1/4 " Min. [6.4mm] [9.5mm] 1/8 " [3.2mm] 1-3/4 " [44.5mm] 5/8 " [15.9mm]