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  • United Doors and Locks guide: NRP hinges

    , by United Doors and Locks NRP Hinges: The Cheap Upgrade That Stops a Door Being Lifted Off

    On an outswing door the hinge pins face the street, and a door can be lifted out with the lock still thrown. Non-removable pin hinges...

  • United Doors and Locks guide: Continuous vs butt hinges

    , by United Doors and Locks Continuous Hinges vs Butt Hinges

    Butt hinges carry a door at three points; continuous hinges carry it along the whole edge. Which openings justify the cost difference.

  • United Doors and Locks guide: Ball bearing vs plain bearing hinges

    , by United Doors and Locks Ball Bearing vs Plain Bearing Hinges

    The rule that settles most cases: if the door has a closer, it needs ball bearing hinges. Here is why, with the cycle counts behind...

  • United Doors and Locks guide: How many hinges does a door need

    , by United Doors and Locks How Many Hinges Does a Commercial Door Need?

    Hinge count comes from door height, and hinge size and weight come from door width and mass. The standard schedule, plus when to go heavier.

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