Review on Enhanced Vinyl Sliding Window Locks by Defender Security - Effortless Installation for Securing Windows - Durable White Diecast Construction (Pack of 2) by Victor Correa

I live in an apartment and I can't drill the window frames without losing my deposit. The Defender U 9809 caught my attention because it installs without drilling, screwing or wall plugs. If you apply them carefully, they will not damage the finish of your windows or frames. If your windows are white, the locks will match perfectly. They allow me to have a window air conditioner that requires the window to be open and closed. Security? You risk breaking vinyl window frames if you tighten the locks so they can't move. But with two of them I think you need a crowbar to open the window from the outside. It would be easier to break the window or go somewhere else. I have peace of mind and calmly accept the defense attorney's decision. If you need total security, consider purchasing these vertical bars: https://www.amazon.com/Window-Security-Locks-Onto-Frame/dp/B00PG1EP86/