I spoke to Majic Stairs when I was looking and they didn't know anything about fireproofing. Turns out that it didn't matter as my attic construction would not have allowed the installation once I really looked at the videos. The stairs I have are
Husky 800. They have an option for a fire resistant door which I have - proven by the label in my other post. I was fortunate to purchase it from a homeowner here that had it replaced with Majic Stairs.
Husky 800 stairs are manufactured in Memphis, TN. I know they have distributors but you'd have to measure your opening and call them to see if there was a local one.