The Astro Ceiling Fan Firestop is a flexible intumescent cover designed to reinstate the fire performance of ceilings where ceiling fans are installed. In the event of fire, the cover expands to fill the void left by the fan unit, helping to maintain the integrity of fire-rated ceilings and prevent the spread of fire and smoke. - Provides up to 60 minutes fire resistance- Specifically designed for ceiling-mounted extractor fans- CE Marked and tested to EN 1366-3 and BS 476 Part 20- Lightweight, flexible, and easy to install from below the ceiling- No need for additional sealants or fixings- Suitable for use in residential, commercial, and public buildings- Helps meet building regulation requirements for fire compartmentation Ideal for electricians, contractors, and compliance officers looking for a tested, maintenance-free solution to preserve fire performance where fans penetrate ceilings.