We have a fire exit that is often in use to access the rear of the building. As it is a food manufacturing site pest control is essential so we have been looking at solutions that we are told are fire safe, however I'm unsure if they would meet regs or not. I've attached an example. Would this meet fire regulations?

It is not a fire door, it’s a final exit door.

Provided the door still opens, it is no worse than it was before.