Expert locksmith installing a new threshold

Anderson Lock locksmith installs a shiny new threshold

Thresholds represent the “point of entering or beginning,” both literally and symbolically.

Howard Carter, an English archaeologist and Egyptologist who became world famous after discovering the intact tomb of 14th-century BC pharaoh Tutankhamun (“King Tut, the boy king”) in November 1922, is quoted as saying, “It soon became obvious that we were but on the threshold of the discovery.

Threshold also refers to the “point at which a stimulus is of sufficient intensity to begin to produce an effect,” as in, “he has a low threshold of pain.”

Alfred Hitchcock, who pioneered many techniques in the  psychological thriller film genre, said, “I’m fortunate to be a coward, to have a low threshold of fear, because a hero couldn’t make a good suspense film.”

At Anderson Lock, thresholds are spoken about in the literal sense. We sell saddle thresholds (like the ones pictured here), ramp thresholds and panic thresholds. New thresholds are almost always installed with a new door and frame, because the existing threshold has to be removed to fit the frame into the opening. Thresholds are oftentimes replaced when a new door is installed because thresholds suffer corrosion from salt, or are simply worn out from heavy traffic.


  • Locksmiths notch thresholds to fit snugly into frames.
  • They put a bead of caulk under them to prevent dirt and water from seeping through, before fastening them with anchors and screws.
  • Saddle thresholds are typically one-quarter or one-half inch in height. (Handicap accessibility guidelines don’t allow thresholds to be higher than one-half inch.)
  • Standard widths are four, five and six inches, and standard lengths are 36”, 48”, 72” and 96”.
  • Options for thresholds include non-skid surfaces and thermal barrier vinyl bumpers.

If your facility is on the threshold of choosing new doors, frames, locks and hardware, give us a call.

We’ll guide you as you cross that threshold, and assure you of the peace of mind that comes with security!

Anderson Lock tech cuts notch into new threshold

Anderson Lock locksmith cuts notch into new threshold


Mike Kuchan installs a new saddle threshold

Mike Kuchan installs a new saddle threshold