Recent Blogs
Mortise Lock: Mechanism and Case Fit Calculator
Explore mortise-lock latch and deadbolt motion. Compare case depth, pocket thickness and measured door dimensions with a case-fit calculator.
Geared Continuous Hinge: Door-Weight Moment Calculator | FIRGELLI
Compare static door-weight moment and average moment per inch of hinge length. Learn how geared leaves, cap and bearings work and where product ratings are...
Hinge Loads: Ideal Two-Hinge Door Moment Calculator | FIRGELLI
Calculate the ideal horizontal hinge-force couple for a uniform door from mass, width and hinge spacing. Fastener forces, hardware capacity and impact loads are not...