The flexible steel cable has been tested to withstand over 4,000 lbs. of direct force.
A unique feature of the flexible cable and tube assembly is that it offers forgiveness of mis-alignment due to house settling or improper installation. It can be retrofitted to fit existing windows by simply bolting directly onto most manufacturer's window bars.
The hex-head bolts are slightly drilled out after installation to prevent easy removal by thieves and burglars.
The outside cover is sealed to protect the cable and tube interior from burglars and weather.