Class 4 – Dangerous When Wet

The sign denoting Class 4.3 – Dangerous when wet serves to indicate potential risks associated with materials being transported. Within Class 4.3 are substances that react with water, whether in liquid or vapor form, and produce flammable gas (e.g., calcium carbide). In confined vehicles, these substances can be influenced by condensation, which can be ignited due to the heat generated by the reaction. To prevent the entry of moisture or water vapor, these materials must be stored in containers that are both waterproof and hermetically sealed.

Properties:

• Made of  vinyl material
• Water-resistant and weatherproof
• Can be used indoors or outdoors
• Easy to read and understand

Directions:

• To install, simply clean the surface where you want to place the sign and then apply it using the adhesive backing.
• For best results, apply the sign in a cool, dry environment.