The terms "window bars," "burglar bars," "security bars," and "window guards" are often used interchangeably, causing confusion for homeowners researching home security options. This guide clarifies the terminology and helps you understand what you're actually buying.
The Short Answer
Window bars and burglar bars refer to the same product—protective metal barriers installed on windows to prevent unauthorized entry. "Burglar bars" is the older, more colloquial term, while "window security bars" or simply "window bars" are the modern preferred terms that sound less prison-like.
Terminology Breakdown
Window Security Bars (Modern Term)
The current industry-standard term emphasizing the security function while sounding more professional and less intimidating. This is what manufacturers and retailers primarily use in 2025.
Burglar Bars (Traditional Term)
The colloquial term used for decades, especially in urban areas with high crime rates. While accurate (they do prevent burglars), the term has fallen out of favor due to negative connotations about neighborhood safety and aesthetics.
Window Guards
Sometimes refers specifically to bars designed for child safety rather than burglary prevention, though the products are often identical. In some jurisdictions, "window guards" are legally required in buildings with young children.
Security Grilles
Decorative or retractable versions of window bars, often used in commercial settings. These may fold away when not needed or feature ornamental designs.
Types and Variations
Fixed Bars
Traditional permanently installed bars welded or bolted in place. High security but no flexibility. Often what people picture when they hear "burglar bars."
Adjustable/Removable Bars
Modern versions like the SWB Model A that can be adjusted to fit various windows and removed if needed. These have largely replaced fixed bars in residential applications due to fire safety concerns and flexibility.
Quick-Release Bars
Bars with emergency egress mechanisms required by fire code for bedrooms. The Model A/EXIT is an example, allowing escape from inside while maintaining security.
Regional Terminology
| Region | Common Term |
|---|---|
| Northeastern US | Window guards |
| Southern US | Burglar bars |
| Western US | Security bars / window bars |
| Midwest | Window bars |
| Latin America | Rejas (Spanish) |
What to Look For When Shopping
Regardless of what terminology retailers use, focus on these key features:
- Adjustability: Can they fit your specific window sizes?
- Material: Steel gauge thickness (14-16 gauge is standard)
- Fire Safety: Quick-release mechanism if required by code
- Installation: DIY-friendly or professional installation needed?
- Aesthetics: Modern powder-coated finish vs. plain steel
- Warranty: What's covered and for how long?
Modern vs. Traditional Comparison
| Feature | Traditional "Burglar Bars" | Modern "Window Security Bars" |
|---|---|---|
| Installation | Welded, permanent | Adjustable, removable |
| Fire Safety | Often non-compliant | Quick-release options available |
| Appearance | Industrial, prison-like | Sleek, powder-coated finishes |
| Cost | $250-600 per window installed | $80-150 DIY |
| Flexibility | None (permanent) | Adjustable, transferable |
Bottom Line
Whether you search for "burglar bars," "window security bars," "window guards," or any other variation, you're looking for the same product category. The key difference isn't in the name—it's in the quality, adjustability, fire safety compliance, and modern features like quick-release mechanisms.
Modern adjustable window security bars like the SWB series combine the security benefits of traditional burglar bars with contemporary design, code compliance, and user-friendly installation—all at a fraction of the cost of custom welded bars.