At PDQ, we never take quality for granted. All of our product lines are tested not just to meet ANSI BHMA standards, but to EXCEED them.
This graph represents a test of the PDQ MR Mortise lock, which ran for 11 million cycles before failure. The test runs 24/7 without stopping until the lock fails. To reach 11 million cycles, the testing took 22 months, or 1 year and 10 months of constant testing.
Shown in the cycle test video above are (from top)