Extreme caution should always be used in explosive atmospheres. Remind staff and guests by posting a warning explosive atmosphere sign. Easy to mount with double-sided tape, sticky pads or other common adhesive. Made of high-quality plastic, and manufactured in the UK by Jalite. Photoluminescent coating glows in the dark. Yellow and black print on a white background. Image of an explosion and text that reads, “Warning explosive atmosphere” choose from two size options. 200mm x 150mm or 100mm x 300mm.