When the threat is a high-power rifle, the security glazing conversation changes tone entirely. UL 752 Level 5-7 glazing exists for exactly that situation, and the difference from handgun-rated panel is not a small bump — it is a step change in thickness, weight and construction.
What Level 5 to 7 means in practice
Levels 5 through 7 in UL 752 correspond to high-power rifle rounds — progressively heavier and faster projectiles. A panel rated to these levels is a multi-layer construction, often laminated polycarbonate or a composite build, thick enough and stiff enough to stop the round and contain the energy without spall behind the panel. It is heavy and expensive, and it is specified only where the assessed threat genuinely includes rifles, such as embassies, government lobbies and critical infrastructure.
Matching the level to the threat
- Assess whether the site genuinely faces a rifle threat.
- Confirm the specific round each level stops.
- Budget for the thickness and weight of high-level glazing.
- Verify spall control on the panel you specify.
For the full level map, see UL 752 ratings from Level 1 to Level 8, and for how this glazing is built, laminated polycarbonate multilayer ballistic glazing.
Frequently Asked Questions
Q: What does UL 752 Level 5-7 glazing stop?
A:These levels stop high-power rifle rounds, each progressively heavier and faster; a panel at this level is a thick, stiff laminated construction built for rifle threats.
Q: Is Level 5-7 glazing worth the cost?
A:Only if the assessed threat includes rifles. Below that, a handgun-rated panel is lighter, cheaper and sufficient, so the level must follow the risk assessment.
For a ballistic or security glazing quote with the threat level and panel size, email oversales@rpplexiglass.com with the location, threat and panel dimensions.