When the window makes contact with the lock it block it it s stopped.
Double hung window security bar.
A double hung window has two panes of glass one above the other and are often secured with a crescent latch.
The latches on most double hung window locks are no match for a burglar with a pry bar.
Used for single hung windows sliding windows and patio doors.
These are typically used for double hung windows.
Pin locks are an easy solution.
To install one all you have to do is drill a hole.
Defender security u 9928 keyed sash lock child proof security lock only unlocks with key for aluminum vinyl or wood double hung windows 2 hole centers heavy duty zinc diecast construction white.
Window guards are adjustable in width to fit most window openings and are constructed of solid and tubular steel with horizontal bars spaced 3 1 2 in.
The latch is generally not designed to be extremely secure.
Withstands repeated impacts with its unique double headed push pin that provides extra resistance from forced entry.
Sash locks may be used on double hung single hung or casement windows.
If you already own a home security system then you probably already have door window sensors.
All units include tamper proof installation screws and window l stops for enhanced safety.
Keyed sash lock keyed sash locks are available to fit most double hung windows.
It just keeps the window closed.
3 bar units are available in black and white non toxic rust resistant powder coat finish.
Single or double hung sash a sash window has one or two sashes that can slide up and down on tracks in a frame.
A good window security option is that you can install strong and visible window locks on your basement first floor windows or balconiesand add simple deadbolts or sash locks for extra security layer.
Stop locks bar locks track locks locking pins and wedge stops all work for single hung or double hung windows.
These devices are designed to detect whenever your window is opened and for some security systems an alert will be chimed to let you know whenever this has happened.
The problem is that the crescent latch is easily jimmied open by inserting a knife or other flat tool.
Simply remove the old lock fill the screw holes drill new fastener holes and install the unit.