Fire-retardant polyurethane expanding foam Fire resistance up to 120 minutes Up to 240 minutes fire resistance when used with Bostik FireProtect® products One-component, ready-to-use formula Hand-held application – no gun required Fine cell structure for strong, even expansion High thermal and acoustic insulation Professional-grade performance 750ml can size Bostik FP404 PU Fire Retardant Expanding Foam Hand Held 750ml | 30612888 Advanced Fire Protection Bostik FP404 is a fire-retardant polyurethane foam designed to provide up to 120 minutes of fire resistance. When used in combination with other Bostik FireProtect® products, fire resistance can be extended to 240 minutes, making it ideal for fire-rated applications. Professional Filling & Fixing This 1-component PU foam expands with a fine cell structure, ensuring strong, reliable filling and fixing for gaps, joints, and penetrations. Thermal & Acoustic Insulation The foam delivers excellent thermal and sound insulation, helping to improve energy efficiency and reduce noise transmission. Easy Hand-Held Application Supplied in a 750ml hand-held can, FP404 is simple to apply without the need for specialist tools, making it suitable for professional and trade use.