This Harmful Warning Sign alerts people to the presence of hazardous, toxic, or dangerous substances. It is made of rigid plastic and self adhesive and measures approximately 300 x 100mm. Rigid plastic is easily drilled, has a high impact strength, and can be used both indoors and outdoors. Our high gloss self adhesive vinyl has a self adhesive backing and can be used on clean indoor surfaces. This safety warning sign informs the public about the dangers of hazardous substances and aids in the safety of children. The triangular safety warning sign has a black cross symbol and the words "warning harmful" on a mostly yellow background. It is currently in stock and can be delivered the next day. Our products are designed to comply with UK government regulations or best practise where applicable.

Product Options

On all of our safety signs, we offer the fastest guaranteed delivery option in the UK at our checkout. If you order before 3pm, your signs will be delivered by our courier before 9am or before 10am any weekday except Sunday. The standard delivery time is the next day, but we cannot give you a specific time.

Materials Guide

Guidance on Sizes

This table shows maximum viewing distances in 'good' and 'poor' light conditions. Please note that hese are a guidelines only - please refer to BS ISO 3864-1: 2011 for specific calculations. You can download a copy of the Health and Safety Executive's "Safety signs and signals" document by clicking here

Delivery Schedule

Orders in mainland UK placed before 3.00pm from Monday to Friday will be delivered the following working day.

Deliveries to N.Ireland will be between 2-3 days.

The above delivery times are applicable subject to the products being in stock. If orders are placed for products which are not in stock then you will be notified by phone or email.

Delivery is normally made between 9am and 5pm. We are unable to provide customers with an exact time for delivery. While we offer a next day delivery service, it is not guaranteed.