: The bullet or its fragments must not pass through the barrier.
: Unlike the 11th edition, where passing a higher level (e.g., Level 8) often implied passing lower levels, the 12th edition uses distinct designations that must be tested individually. A material rated for a rifle may not necessarily pass a handgun test due to differing projectile behaviors.
This article is for informational purposes only. UL standards are copyrighted and subject to change. Always consult a licensed security engineer and the official UL Standards website for the most current requirements.
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The UL 752 standard evaluates the protective capabilities of materials against specific firearm threats. The testing process determines whether a material can successfully prevent a bullet from completely penetrating it, while also ensuring that no dangerous structural fragmentation (spall) occurs on the protected side. The standard covers a wide range of products, including: Bullet-resistant glazing (glass) Fiberglass panels and opaque armor Security doors, frames, and windows Deal trays and pass-through windows
Because UL standards are protected intellectual property, official, valid copies of the complete UL 752 standard PDF must be purchased directly through the or authorized clearinghouses like Techstreet or IHS Markit. When utilizing the document for project specifications: