Whats the maximum size of glazing panel I can fit into a fire rated door?
You will need to refer to your door manufacturer’s test evidence, as this will show the maximum size of glazing panel you can fit. The sizes shown in our Fire Resistant Glazing Systems brochure (available to download from this site) relate to the sizes in Lorient’s own test evidence – but if the test evidence for your door shows a smaller size, then that is the maximum size you can fit.