The Philips Defibrillator Cabinet (Semi-Recessed) is a white cabinet with audible alarm and flashing lights.  Once the cabinet door has been open the alarm and flashing lights will activate to alert the public that an emergency has taken place.  An AED should be visible at all times to let the public know that and AED is ready and available for use. Cabinet is made with heavy gauge metal and tempered glass window.  Inside Dimensions: 14"x22.5"x6".