Amazon has Ideal Security Window Security Bar with Child-Proof Lock, Extendable, White (10.6-16.625 Inches) for $17. Shipping is free w/ Prime or on $25+ or $35+ orders (minimum requirement varies by location).
Description
- Sliding window security bar with a childproof anti-lift lock acts as a visual deterrent against burglars who can see it clearly through the door
- Sliding window lock easily slides from 10.6 to 16.625 inches and can be installed without cutting; allows the window to partially open while being secured
- Install in-window air conditioner units or leave the window partially open for ventilation, all while locking your window in a secure position
- Can be eithered screwed into the window frame and profile or mounted with strong 3M double-sided tape (included), providing reliable protection, unlike the pressure-mounted bars that can shake loose and fall
- Window lock mounts anywhere in the window profile, allowing you to install it out of the reach of children