Which tool is specifically designed to open double doors equipped with panic bars?

The J tool is specifically designed for the purpose of opening double doors that are equipped with panic bars. This tool has a unique shape that allows it to manipulate the locking mechanism of panic bars effectively. The J tool’s design enables firefighters to gain access through doors in emergency situations, particularly when they need to ensure safe passage for themselves and others during a fire or rescue operation.

In this context, understanding how the J tool interfaces with panic bars is crucial. Panic bars are designed to allow quick egress in an emergency but can pose challenges when access is required from the opposite side. The J tool provides a solution by reaching through the gap created by the double door and pulling on the panic bar mechanism, thereby allowing the door to open without causing damage to the locking system.

Other tools mentioned, like the Slim Jim or the bar fly, are designed for different types of access and may not be effective for double doors with panic bars. The key tool, while useful for traditional locks, does not provide the necessary functionality needed for the specific challenge posed by panic bars in double-door scenarios. The J tool's specialized design for this application makes it the most appropriate choice for opening such doors in emergency situations.