In recent years, many events have taken place that has forced businesses and organizations to implement enhanced security measures in and around their properties. Installing bulletproof security window systems is one of the most suitable protection methods, as many attacks are directed at windows. However, for security windows to resist ballistic threats, they need to be supported by the appropriate frame. Therefore, this blog post will look at what materials are needed for bulletproof security window frames.

What Framing Materials are Needed for Bulletproof Security Windows?

Much like windows and doors, there are several options for framing materials. Bulletproof security window frames must be engineered with solid materials such as aluminum or steel to withstand ballistic threats. However, the threat level to the business may influence which materials are used, as higher-risk settings will require more robust materials.


Aluminum is often used in security window frames because of its durability, high strength, and ability to be configured to suit different sizes and ballistic levels. For security purposes, aluminum window frames are a solid choice as they enable the capture and retention of attacking projectiles. 

Stainless Steel

Stainless steel is another popular material for security window frames because, like aluminum, it offers high durability and strength, but it is also easy to maintain and requires no finishing. The primary purpose of security frames is to support the windows and resist impact. Stainless steel is used to withstand a wide range of impacts, from personal break-ins to ballistic attacks.


Fiberglass provides similar benefits to stainless steel, but its outstanding factor is that it can be molded into different shapes and sizes to suit specific requirements. In addition to its robustness and durability, fiberglass is lightweight, energy efficient, and can be finished to look like other materials, such as wood or stone.

Hollow Metal

Hollow metal offers excellent support to security windows and can endure harsh environments better than other materials can. They can be customized to suit indoor and outdoor applications and are used because hollow metal absorbs and disperses impacts, reducing the risk of breaking and other damage. 

Armortex Security Windows

Armortex manufactures bullet, blast, and forced entry-resistant products for a range of industries. We operate under an ISO 9001 quality management system to ensure we provide products that protect the lives of others.

Armortex can engineer security windows and frames to suit your applications and specific sizes. We manufacture window frames in aluminum, hollow metal, and stainless steel, all of which can be made to meet a range of ballistic levels (UL) from one to ten, and sizes range from 6” to 96” in height and width, depending on the frame and window chosen. We also offer a range of glazing and finishing options.

Contact an Armortex team member today to learn more about the framing materials used for bulletproof security windows.