The Cal Royal F9960V3684 US32D fire rated vertical rod panic bar is a type of exit device that allows a door to latch at the top and bottom of its frame instead of along its edge. This makes the the panic bar ideal for double door installations, but can be used on single doors as well. This crash bar is rated Grade 1, which means that it can withstand heavy daily use. This is the highest grade of durability. It is designed to fit doors that are 36 inches wide by 84 inches tall, or 3 feet by 7 feet. Comes in a stainless steel finish. This panic bar is fire rated. If you are looking for a non fire rated panic bar, you need the CR 9960V3684 US32D. Please note that this product is discontinued. For its replacement, you need the CR F7760V3684 US32D.