David Bolton Why a 4-1/2" x 4" Hinge Exists — and When to Specify the Asymmetric Leaf The Hinge Dimension That Often Gets Overlooked This article explains what a 4-1/2" x 4" asymmetric hinge is, why it exists as a distinct catalog size, and which field conditions make it the correct ch... commercial hinges door hardware replacement full mortise ball bearing hinge hardware schedule hinge specification Apr 23, 2026 Our Blog