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SKU 7010343557
Legacy SKU 75030023644
UPC 00051138572983
Product Number 3MN405DG

3M™ Diamond Grade™ signs.

  • Approved supplier to the U.S. Navy
  • Retroreflective letters and numbers used for the production of safety and emergency exit signage
  • Highly visible under ambient light and in dark conditions with retroreflected light
  • Aggressive, pressure-sensitive adhesive
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On it's way to you October 30  


Minimum Order 1 Pack
Order Increment 1 Pack
  Great for Road Safety
  Very Visible
  Fast Shipping
  Industry Low Price
Product Dimensions
Imperial Metric
Width 3 in 7.62 cm
Length 10 in 25.4 cm
Shipping Dimensions
Weight 0.78 lb
Length 12.6 in
Width 9.4 in
Height 5.3 in


  1. What is the 3M™ Diamond Grade™ Ventilation Sign?

    The 3M™ Diamond Grade™ Ventilation Sign is a high-quality, reflective sign designed to alert people of open ventilation areas.

  2. What size does it come in?

    It comes in a standard size of 10 inches by 3 inches.

  3. How many signs come in one package when I order it?

    Each package comes with ten (10) identical signs to ensure that you have plenty for all your needs.

  4. Can I install this sign on any surface?

    . Yes, the adhesive backing allows for easy mounting on most flat surfaces such as metal, plastic or even glass.

  5. Q:. Is this sign weather resistant?

    A:. Definitely! Made by 3M, this premium quality ventilation sign will withstand different types of weather conditions and exposure to outdoor elements without fading or cracking.

Product Description: 3M™ Diamond Grade™ Ventilation Sign 3MN405DG, "THIS…OPEN", 10 in x 3 in, 10/Package

The 3M™ Diamond Grade™ Ventilation Sign 3MN405DG is a high-quality signage solution designed to enhance safety and visibility in various indoor and outdoor environments. With its bold and attention-grabbing design, this sign effectively communicates the message "THIS...OPEN" to ensure that individuals are aware of the ventilation status in a particular area. Measuring 10 inches by 3 inches, this sign is compact yet highly visible, making it suitable for a wide range of applications.

What sets the 3M™ Diamond Grade™ Ventilation Sign 3MN405DG apart is its use of 3M's innovative Diamond Grade™ technology. This technology utilizes prismatic reflective elements that provide exceptional brightness and visibility, even in low-light conditions. The sign's reflective properties ensure that it can be easily seen from a distance, making it ideal for use in dimly lit areas or during nighttime. Additionally, the sign is constructed with durable materials that are resistant to fading, cracking, and peeling, ensuring its longevity and reliability.

Each package of the 3M™ Diamond Grade™ Ventilation Sign 3MN405DG contains 10 signs, making it a cost-effective solution for businesses, organizations, and facilities that require multiple signs for various locations. The signs are easy to install, thanks to their adhesive backing, which allows for quick and hassle-free application on a variety of surfaces. Whether it's for use in warehouses, manufacturing plants, parking lots, or any other setting, the 3M™ Diamond Grade™ Ventilation Sign 3MN405DG is a dependable choice that prioritizes safety and visibility.

  • High-quality signage solution for enhancing safety and visibility
  • Measures 10 inches by 3 inches, suitable for various applications
  • Utilizes 3M's Diamond Grade™ technology for exceptional brightness and visibility
  • Constructed with durable materials resistant to fading, cracking, and peeling
  • Package includes 10 signs for cost-effective use in multiple locations
  • Easy installation with adhesive backing
Brochures, Catalogs & Data Sheets
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