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Defender Security
The classic window security upgrade. Set it to allow ventilation or lock completely closed.
Sash lock
Zinc die-cast
Screws (included)
4 units
| Product | Rating | Price | Action |
|---|---|---|---|
| Window Sash Lock (4-Pack) Best Defender Security | 4.6 | $12 | View |
 Adjustable Window Lock BurglaBar | 4.3 | $8 | View |
 Window Vent Lock (2-Pack) Value Prime-Line | 4.5 | $6 | View |
 Patio Door Security Bar Ideal Security | 4.4 | $20 | View |
 Door/Window Alarm Wedge GE | 4.2 | $15 | View |
* Prices may vary. As an Amazon Associate, we earn from qualifying purchases.
Defender Security
The classic window security upgrade. Set it to allow ventilation or lock completely closed.
Sash lock
Zinc die-cast
Screws (included)
4 units
BurglaBar
The simple solution for sliding windows. Just cut to size, place in track, done.
Pressure bar
15"-28" width
Friction fit
Aluminum
Prime-Line
Lets windows open 4 inches for air while staying locked against intruders. Perfect for bedrooms.
Vent lock
Steel
4" max
2 units
Ideal Security
Industrial-strength security bar that makes forcing a sliding window/door nearly impossible.
Steel
25"-48"
Security bar
Built-in
GE
Doesn't stop entry but screams when someone tries. Perfect for travel and ground-floor windows.
120dB
Vibration
9V battery
Portable wedge
Modern security bars are much more subtle—interior-mounted options are nearly invisible from outside. You don't need obvious iron bars for good security.
Always ensure at least one egress window per bedroom can be opened quickly. Many locks have quick-release mechanisms. Never sacrifice fire escape for security.
Window locks don't stop glass breaking, but they do prevent entry. Burglars avoid breaking glass (noise attracts attention) and prefer forcing locks. Add security film for glass protection.
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