Deadbolts vs Deadlatches, what’s the difference?
August 7, 2025
What is back-check?
Backcheck slows the door in the opening swing to help keep it from hitting an adjacent wall or having wind throw it out of your control. Backcheck resistance should only be felt near the fully open position.
Notes: Backcheck is not a door stop. Most of our Grade 1 door closers offer fully adjustable Backcheck.
What is sweep control?
Sweep speed (door closing speed) is the time frame form the start of the door closing to a couple inches before the door hits it latch point. The last few inches of closing are controlled via the latch speed valve if one is included.
What is latch speed?
The Latch Zone is the last few inches before the door hits it latch point. This closing zone is controlled via the latch speed valve.
Note: A properly adjusted door closer latch speed should never slam the door closed causing stress on the door and frame.
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