This test reproduces the efforts of a well-equipped individual attempting to force entry. The test has three phases. Testers begin by trying to force open the window using tools like a knife blade, screwdriver, and wire. They then attach a cable to strategic points on the window and apply increasing loads. If the window continues to resist, they use tools again in a third attempt.
Windows rated F1 have a locking system, but have not been tested for forced entry.
Windows rated F2 have successfully passed the test at level 10. Gilkey windows are rated F2, level 40.
| Rating Level |
Window Type |
| Level indicates the initial load applied to the cables |
| Level 40 - 300 lb. |
Gilkey Windows |
| Level 30 - 250 lb. |
High-end |
| Level 20 - 200 lb. |
Mid-range |
| Level 10 - 150 lb. |
Low-end |
|
LOAD ORIENTATION
- Parallel to the window from the handle
- Perpendicular to the window from the handle, first by pulling then by pushing
- Parallel to the window at center of the sash, from the bottom upward
- Perpendicular to the window where the sashes meet, toward the interior
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