Defenshield Glass Partitions Ballistic Furniture

Bullet-Resistant Glass Construction

Bullet-resistant glass appears identical to regular glass and can save lives. This type of glass can stop single or multiple rounds of bullets from penetrating its surface, depending on the glass thickness and the type of weapon. There are several methods to construct safe and effective bullet-resistant glass.

The standard process for making bullet-resistant glass is to layer pieces of polycarbonate between regular glass sheets in a process called lamination. The polycarbonate is a durable, clear plastic that is especially resistant to damage and penetration. Polyvinyl butyral and ethylene-vinyl acetate bond the sheets together.

In general, the more layers added to the product, the stronger the glass will become. Industry standards for glass thickness can range between 7 millimeters (mm) to 76 mm. The manufacturer determines the thickness based on the product specifications and glass applications. Normal bullet-resistant vehicles may have a glass thickness of about 10mm, while military vehicles could have glass as thick as 50 to 70 mm.

The goal of bullet-resistant glass construction is for the final product to have the clarity of standard glass with added protection against firearms. Bullet-resistant glass can also protect users from the impact of physical assault and sharp objects.

Test Standards

Manufacturers test bullet-resistant glass, or transparent armor, by firing a gun into its surface at a distance in a particular pattern. Various degrees of protection are assigned to the glass based on the material’s ability to stop the bullet at certain speeds. Users can measure the depth of the dent left on impact when the glass keeps the bullet from penetrating and relate it to the projectile’s velocity and the material’s thickness.

There are several systems for identifying levels of bullet resistance. Standards upheld by government institutions and other organizations include:

• UL: Underwriters Laboratory (UL) designed a system that identifies eight types of bullet resistance based on the glass’ weight and its ability to withstand fire at certain velocities.
• NIJ: The National Institute of Justice (NIJ) has a slightly different system for judging bullet resistance with ten levels.
• State Department: The U.S. Department of State provides a bullet resistance classification based on specific firearms tested against the glass.

Types of Security Glass

Choosing the right security glass for your application ensures proper protection. There are several levels of protection offered by different types of safety glass.

Under UL standards, there are four primary categories of safety glass:

• Level 1:This type of window glass offers some protection against handguns and is often used to deter petty crime in places such as convenience stores or gas stations.
• Level 2: This safety glass can withstand fire from most handguns and help protect financial institutions from theft.
• Level 3: Glass in this category increases protection and offers an excellent safety solution for schools and police stations.
• Levels 4-8: Safety glass above a Level 4 is considered bulletproof. Window glass of this level or higher can withstand bullets from automatic weapons and assault rifles. It is often used in armored cars, government facilities and military bases for ultimate protection.

Dimensions 
24” (w) x 60” (h) x 26” (d)

Protection Level:
NIJ Level IIIA (44 MAG)
NIJ Level III (7.62 NATO)
NIJ Level IV (30-06 AP)

WARNING This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. You must be 18+ years old to shop and or purchase on our website and 21+ to purchase Ammunition/Firearms. Check local laws before ordering as you certify you are of legal age and satisfy all federal, state, and local legal/regulatory requirements. There are NO returns or exchanges on armor, firearms, ammunition, PPE equipment. Ammo ships UPS ground to the lower 48 states.
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