Do Not Enter Sign

Do Not Enter Sign – 3M Engineer Grade Reflective Aluminum for High-Visibility Access Control

The Do Not Enter Sign (Part# LS-11477) is a heavy-duty, reflective aluminum safety sign designed for contractors, site managers, and facilities professionals who need reliable, long-lasting access control signage. Constructed from 63 mil aluminum with 3M Engineer Grade reflective sheeting, this sign delivers clear, high-contrast red-on-white messaging that remains visible in low-light and nighttime conditions. A laminated finish provides superior durability against weathering, UV exposure, and jobsite wear. Pre-punched mounting holes and rounded corners allow for fast, straightforward installation on posts, fences, barriers, or walls.

Technical Specifications

Unlike standard painted or non-reflective signs, this sign uses 3M Engineer Grade reflective sheeting bonded to rigid 63 mil aluminum, offering a combination of structural rigidity and nighttime visibility that flat-printed or plastic alternatives cannot match. Contractors who require higher reflectivity performance can select the same sign in 3M Hi Intensity or 3M Diamond Grade reflective aluminum for demanding roadway or high-traffic environments.

Key Features & Benefits

3M Engineer Grade Reflective Sheeting

The 3M Engineer Grade reflective surface ensures the sign is clearly visible to drivers and workers in low-light and nighttime conditions. This level of reflectivity is well-suited for construction site perimeters, parking facilities, and access roads where after-hours visibility is critical.

63 Mil Aluminum Substrate

The heavy-gauge 63 mil aluminum construction resists bending, warping, and impact damage common on active jobsites. This rigidity ensures the sign maintains its shape and legibility throughout extended outdoor use.

Laminated Finish

A protective laminate over the reflective face guards against UV degradation, moisture, and surface abrasion. This extends the service life of the sign and keeps the message crisp and readable over time.

Pre-Punched Holes and Rounded Corners

Factory-punched mounting holes eliminate the need for field drilling, saving installation time on busy jobsites. Rounded corners reduce the risk of snagging or injury during handling and installation.

Multiple Size and Material Options

Available in 12" x 12", 24" x 24", and 30" x 30" to suit different viewing distances and site requirements. Contractors can also upgrade to 3M Hi Intensity or 3M Diamond Grade reflective aluminum where higher-performance reflectivity is required by local regulations or project specifications.

Common Applications

Construction Site Access Control

Posted at unauthorized entry points to restrict worker and public access to active construction zones, reducing liability and improving site safety compliance.

Parking Facility Management

Installed at one-way exits, restricted lanes, or reserved areas within parking structures and lots to direct traffic flow and prevent wrong-way entry.

Road and Driveway Restrictions

Used at private road entrances, gated driveways, and facility access roads to clearly communicate entry restrictions to drivers day and night.

Industrial and Warehouse Facilities

Mounted at restricted loading dock entrances, hazardous material areas, or employee-only zones to enforce access policies within industrial environments.

Compatible Materials

• Posts and sign poles (standard mounting hardware)
• Chain-link and temporary construction fencing
• Concrete and masonry walls (with appropriate anchors)
• Wood framing and barriers
• Metal panels and equipment enclosures