However, we wanted to push our fire rated post boxes even further. As part of our ongoing commitment to R&D and market reassurance, we have further tested and assessed our Fire Rated mailboxes.įR1, FR2 & FR3, three fire rated mailbox models had already been tested by Warrington Fire to the previous BS 476 Part 22: 1987 standard, which meant that they had all achieved a 60-minute fire rating.
