Demsun B1 Fire Proof Insulation PU Expanding Foam Gap Filler Hand Held 750ml | eBay
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Stick2 One Component PU B1 FR Expanding Gun Foam Expanding Fire Rated Foam Filler Exceptional Adhesion for Various Applications Gap Filler 12x750ml + Applicator Gun : Amazon.co.uk: DIY & Tools
Soudafoam Fire Resistant Hand Held Polyurethane Expanding Foam Filler - 750ml | Wickes.co.uk