Danger OSHA Sign: Do Not Enter Authorized Personnel Only - 10" x 7" Aluminum

Danger OSHA Sign: Do Not Enter Authorized Personnel Only — Multi-Material Access Control Signage

The Danger Do Not Enter Authorized Personnel Only sign is a compliant OSHA-style safety sign designed for contractors, facility managers, and trades professionals who need to restrict access to hazardous or controlled work areas. Available in four sizes and five material options, this horizontal-format sign delivers clear, high-visibility messaging in black and red. It is suited for job sites, mechanical rooms, electrical enclosures, and any area requiring strict access control.

Technical Specifications

Unlike generic printed signs, this sign is available in 3M Engineer Grade materials — including aluminum and vinyl options — providing superior longevity in demanding outdoor and industrial environments. The 40 mil aluminum variant with lamination and prepunched mounting holes is particularly suited for permanent installations where durability and ease of mounting are priorities.

Key Features & Benefits

Multiple Material Options

Contractors can select from 3M Engineer Grade Labels, Laminated Plastic Labels, 3M Vinyl Labels, 3M Engineer Grade Aluminum, standard Plastic, or 40 mil Aluminum to match the demands of the installation environment. This flexibility ensures the right sign for both temporary job site use and permanent facility installations.

40 Mil Aluminum Construction

The aluminum variant is constructed from heavy-duty 40 mil aluminum and laminated for superior durability against weather, UV exposure, and physical wear. This makes it a reliable long-term solution for outdoor or high-traffic areas.

Prepunched Mounting Holes

Aluminum signs come with prepunched holes, allowing for fast installation using standard screws or nails without the need for additional drilling. Rounded corners reduce the risk of snagging or injury during handling and installation.

High-Visibility Color Scheme

The black and red color combination meets standard OSHA Danger sign color conventions, ensuring immediate recognition by workers on site. Clear, bold messaging reduces the likelihood of unauthorized personnel entering restricted areas.

Four Available Sizes

With sizes ranging from 3.5" x 5" up to 10" x 14", this sign can be scaled to the visibility requirements of the specific location — from small equipment panels to wide doorways and entryways.

Common Applications

Restricted Job Site Zones

Post at the entrance to active construction zones or hazardous work areas to prevent unauthorized personnel from entering and to maintain OSHA compliance on the job site.

Electrical and Mechanical Rooms

Ideal for marking electrical panels, mechanical rooms, and utility enclosures where only qualified personnel should have access.

Industrial Facilities

Used in manufacturing plants, warehouses, and processing facilities to clearly designate areas restricted to authorized staff only.

Equipment and Machinery Areas

Mount near heavy equipment, machinery, or control areas to warn workers and visitors against unauthorized entry that could result in injury.

Compatible Materials

• 3M Engineer Grade Label stock
• Laminated Plastic
• 3M Vinyl Label stock
• 3M Engineer Grade Aluminum
• Standard Plastic
• 40 mil Aluminum (laminated, prepunched, rounded corners)