Danger Ventilation Not CheckedWarn employees that ventilation has not been inspected before entering hazardous work areas with this Ventilation Not Checked ANSI Danger Sign. Featuring a ventilation warning symbol for quick visual recognition, this sign is ideal for mines, confined spaces, underground operations, and industrial facilities where atmospheric testing is required before entry. Manufactured for long-lasting performance, it is available in multiple materials and sizes and can be customized to suit your workplace safety program.Built for durability, this Danger Sign is available in a variety of sizes and materials suitable for indoor and outdoor use. Each sign can be customized to meet your operational requirements. Click on "Customize this Product" to tell us what you require. We will work with you to customize your sign to fit your specifications.Looking for more safety signage solutions? Browse our full selection of Danger Signs and order today!