19 Nov The Importance of UL 752 Ballistic Certification Posted at 15:29h in Accessibility UL752 is a critical standard that defines the level of ballistic protection a product provides. This certification outlines the testing procedures a product must undergo to earn a rating that reflects its ability to resist bullet penetration from various calibers and weapon types.
Why UL 752 Certification Matters
Ballistic certification is vital for ensuring the security and safety of any environment where there is a risk of gunfire. UL 752 ratings range from Level 1 (protection against small-caliber handguns) up to Level 10 (protection against high-powered rifles), with each level specifying the type and number of rounds a product can withstand.
In practice, the overall ballistic rating of an assembly—such as a window with an integrated intercom—is only as strong as its weakest component. For example, if you install ballistic glass rated at UL 752 Level 8, but pair it with an intercom unit rated only to Level 3, the entire system is effectively rated at Level 3. This significantly compromises the intended level of protection.
The Risks of Partial or Misleading Testing
Some manufacturers may test only individual components of a system—such as the glass or the frame—but not the full assembly. Worse, they may claim UL 752 certification based on limited or non-comprehensive testing. This creates a false sense of security and introduces serious risk.
For instance, with in-glass window intercoms, insufficient testing can lead to failure points under fire. If the intercom is not fully ballistic-tested as part of the complete assembly, a bullet strike could cause the unit to detach or fracture, potentially creating an opening for projectile ingress and compromising safety.
Fully Certified Ballistic Window Intercom Systems
Contacta’s window intercom systems are the only fully UL 752 certified solutions currently on the market. Our products are independently tested as complete assemblies, ensuring that both the intercom unit and the surrounding glass maintain the stated level of protection:
- STS-K022 Window Intercom System – Certified to UL 752 Level 3
- STS-K023 Window Intercom System – Certified to UL 752 Level 8
These solutions provide peace of mind for security-sensitive environments such as government facilities, banks, police stations, and other high-risk locations.
Contacta’s window intercom systems improve communication between staff and visitor, while maintaining ballistic integrity of windows.
Call us today for more information or help specifying the correct UL rated window intercom system for your project at (616) 392-3400.
UL752 is a critical standard that defines the level of ballistic protection a product provides. This certification outlines the testing procedures a product must undergo to earn a rating that reflects its ability to resist bullet penetration from various calibers and weapon types.
Why UL 752 Certification Matters
Ballistic certification is vital for ensuring the security and safety of any environment where there is a risk of gunfire. UL 752 ratings range from Level 1 (protection against small-caliber handguns) up to Level 10 (protection against high-powered rifles), with each level specifying the type and number of rounds a product can withstand.
In practice, the overall ballistic rating of an assembly—such as a window with an integrated intercom—is only as strong as its weakest component. For example, if you install ballistic glass rated at UL 752 Level 8, but pair it with an intercom unit rated only to Level 3, the entire system is effectively rated at Level 3. This significantly compromises the intended level of protection.
The Risks of Partial or Misleading Testing
Some manufacturers may test only individual components of a system—such as the glass or the frame—but not the full assembly. Worse, they may claim UL 752 certification based on limited or non-comprehensive testing. This creates a false sense of security and introduces serious risk.
For instance, with in-glass window intercoms, insufficient testing can lead to failure points under fire. If the intercom is not fully ballistic-tested as part of the complete assembly, a bullet strike could cause the unit to detach or fracture, potentially creating an opening for projectile ingress and compromising safety.
Fully Certified Ballistic Window Intercom Systems
Contacta’s window intercom systems are the only fully UL 752 certified solutions currently on the market. Our products are independently tested as complete assemblies, ensuring that both the intercom unit and the surrounding glass maintain the stated level of protection:
- STS-K022 Window Intercom System – Certified to UL 752 Level 3
- STS-K023 Window Intercom System – Certified to UL 752 Level 8
These solutions provide peace of mind for security-sensitive environments such as government facilities, banks, police stations, and other high-risk locations.
Contacta’s window intercom systems improve communication between staff and visitor, while maintaining ballistic integrity of windows.
Call us today for more information or help specifying the correct UL rated window intercom system for your project at (616) 392-3400.