Description Specification sheet Highly durable moulded polypropylene warning sign, 60cm high, with both sides displaying ‘Window Cleaning in Progress’ message in high visibility print. Features innovative top clip design to secure sign once opened and prevent tipping when in use. Did you know? Slips & trips cause 30% of workplace injuries (HSE, 2023). Source: https://www.hse.gov.uk/slips/index.htm
