Danger Utility Manhole Sign – Confined Space Authorized Entry Only, 8x12 Rust-Resistant Aluminum Manhole Cover Safety Sign by CGAP Safety

Utility manholes are not “just a cover in the ground.” They are controlled access points to confined spaces that can contain electrical infrastructure, communications equipment, stormwater systems, or other underground utilities, and the hazards are not always visible from the surface.

The CGAP Safety “Danger – Utility Manhole – Confined Space – Authorized Entry Only” sign is built for locations where you need to establish a clear operating boundary: entry is restricted. The bold DANGER header grabs attention immediately, while the message reinforces two key controls at the point of risk: the space is confined, and only authorized personnel should access it.

This sign is a practical fit for municipalities, utility crews, industrial plants, campuses, water and wastewater operations, commercial facilities, and job sites where manholes exist in public or semi-public areas. It helps reduce casual tampering, keeps untrained personnel from making unsafe decisions, and supports consistent access discipline for crews working around underground openings.

Manufactured in an 8 x 12 inch format from rust-resistant aluminum, it’s designed to hold up in wet conditions, heat, sun exposure, and day-to-day facility wear. The rigid aluminum construction outlasts paper notices and flimsy plastic that curl, fade, crack, or disappear the moment the environment behaves like an environment.

Use this sign as part of your safety communication and access control program to reinforce restricted entry expectations around manholes and confined space openings.

CGAP Safety is an American safety manufacturer dedicated to straightforward, durable signage that helps organizations see the gap and close the gap between written safety programs and what actually happens on site.

• UTILITY MANHOLE DANGER SIGN – “Danger / Utility Manhole / Confined Space / Authorized Entry Only” clearly communicates that the opening leads to a confined space and access is restricted to authorized personnel.
• REDUCES UNAUTHORIZED ENTRY RISK – Simple, direct control messaging helps deter bystanders, visitors, and untrained workers from entering or interfering with manholes and access points.
• SUPPORTS SAFETY & ACCESS CONTROL PROGRAMS – Fits municipal, industrial, and campus environments where controlled entry procedures, supervision, or lockable covers are part of standard operating controls.
• 8x12 RUST-RESISTANT ALUMINUM – Manufactured from rust-resistant aluminum for long-term durability in outdoor conditions, wet areas, and high-traffic locations where paper labels and thin plastics fail fast.
• HIGH-VISIBILITY OSHA-STYLE LAYOUT – Classic red DANGER header and bold block lettering improve readability at a distance on lids, nearby posts, fencing, or approach routes.
• MADE BY AN AMERICAN SAFETY MANUFACTURER – Produced by CGAP Safety, an American safety manufacturer focused on clear, compliance-minded messaging and durable materials for real-world utility and facility environments.