What do UL 752 Levels 1–3 cover?

They address the most common handgun threats: Level 1 (9mm), Level 2 (.357 Magnum), and Level 3 (.44 Magnum) with defined shot counts, velocities, and pass criteria.

Are UL levels cumulative?

No. UL 752 levels are tested independently; a higher level does not automatically include lower-level protections.

What does UL 752 Level 1 protect against?

Three 9mm FMJ rounds (124 gr) at approximately 1175–1293 fps from 15 feet; common for retail counters, kiosks, school reception, and low-risk customer service areas.

What does UL 752 Level 2 protect against?

Three .357 Magnum JSP rounds (158 gr) at approximately 1250–1375 fps from 15 feet; used in urban bank branches, pharmacies, and government counters.

What does UL 752 Level 3 protect against?

Three .44 Magnum LSWC-GC rounds (240 gr) at approximately 1350–1485 fps from 15 feet; specified for courthouses, LE reception, recruiting offices, and jewelry/high-value retail.

How do assemblies pass UL 752 testing?

They must stop all rounds and contain spall/fragmentation so nothing reaches the protected side, confirmed using a witness panel behind the specimen.

Which materials are common at Levels 1–3?

Laminated safety glass with PVB/ionoplast, clear polycarbonate or acrylic, glass-polycarbonate laminates for glazing; ballistic fiberglass panels behind drywall for opaque zones.

Can Level 1–3 systems be retrofitted?

Yes. Many solutions fit existing frames or mount behind finishes, minimizing downtime and preserving aesthetics.

How do these systems maintain usability and ADA compliance?

Through talk-thru voice ports, ADA trays/drawers, and clear sightlines that support natural interaction while maintaining certified protection.

How should I choose among Levels 1, 2, and 3?

Match the level to your realistic threat profile and operations: Level 1 for common 9mm risk, Level 2 for higher-energy .357 threats, Level 3 for the highest handgun threat (.44 Magnum).

Exploring UL levels 1 - 3

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