Easy to understand graphic symbols and simple text explain when a foam type extinguisher should and shouldn't be used. This ensures foam type extinguishers are used only in the proper circumstances. Constructed of durable PVC and finished with a photoluminescent, glow-in-the-dark coating for high visibility even in darkness. Manufactured by Jalite in the UK. Sold in packs of ten. Each measures 50mm x 130mm and is self-adhesive for easy wall mount.