RAWLPLUG R-FR Firestop Mortar is a non-combustible, intumescent mortar designed to seal penetrations in fire-rated walls and floors, preventing the spread of flames and smoke. This 20-litre bucket provides professional-grade fire protection for electrical conduits, cable trays, pipes, and other building services passing through fire compartments. Ideal for electrical contractors, construction companies, and facilities managers working on compliant building installations.