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Description Fire Rated Acoustic Mastic is a highly effective acrylic sealant available in a 900ml cartridge. Specially formulated for fire protection, this product seals and bonds plasterboard, providing an acoustic and fire-rated barrier for up to five hours. It boasts high grab properties and adheres to almost all substrates. After application, it remains permanently flexible, ensuring long-lasting performance. Easy to use and fast-drying, it can also be painted over if desired. Key Features: Fire Protection : Provides a fire-rated barrier for up to five hours. Acoustic Barrier : Effectively reduces sound transmission. High Grab Properties : Strong adhesion to nearly all substrates. Permanent Flexibility : Remains flexible after application for durability. User-Friendly : Easy to use, fast-drying formula. Paintable : Can be painted over to match surrounding surfaces. Single Cartridge Size : Available in a 900ml cartridge for convenience.