This 20-pack of 3M SecureFit 400 Series safety glasses delivers the same ANSI Z87.1-certified protection as the single-pair SF401AF at a per-unit contractor price. Each pair features Pressure Diffusion Temple Technology for self-adjusting comfort, anti-fog and anti-scratch polycarbonate lenses, and a soft nose bridge. Lenses block 99.9% of UV rays. The lightweight design under one ounce works with hearing protection. Ideal for job sites that issue safety glasses to multiple workers. Meets ANSI Z87.1-2020 and CSA Z94.3-2007 high-impact requirements.
Are these the same glasses as the single-pair SF401AF?
Yes. The 20-pack contains the same SF401AF safety glasses with anti-fog and anti-scratch lenses sold individually. The green/black frame color in this bulk pack is the standard production color.
What is the cost per pair in the 20-pack?
Pricing varies, but the 20-pack typically reduces the per-pair cost significantly compared to buying individual pairs, making it ideal for safety directors stocking job sites or distributing to crews.
How long does one pair last in a manufacturing environment?
Users in manufacturing report getting one to several months of daily wear per pair before scratching becomes an issue. The anti-scratch coating helps, but lens life depends on storage and cleaning habits.
Do these work for workers with very large or very small heads?
The Pressure Diffusion Temple Technology self-adjusts across a wide range of head sizes and shapes, including women and workers with larger heads. Many safety directors cite this as a key reason they standardize on SecureFit 400 for their crews.
Does the anti-fog coating wear off over time?
Anti-fog coatings can degrade with repeated cleaning and normal wear. Some users in older units report that fog resistance diminishes after extended use. Hand washing with mild soap and air drying extends coating life.
# 3M™ SecureFit™ 400 Series Safety Glasses, 20-Pack, Clear Anti-Fog Anti-Scratch Lens, Green/Black Frame **Model:** `SF401AF-20PK` **Brand:** 3M **Category:** Safety Glasses > This 20-pack of 3M SecureFit 400 Series safety glasses delivers the same ANSI Z87.1-certified protection as the single-pair SF401AF at a per-unit contractor price. Each pair features Pressure Diffusion Temple Technology for self-adjusting comfort, anti-fog and anti-scratch polycarbonate lenses, and a soft nose bridge. Lenses block 99.9% of UV rays. The lightweight design under one ounce works with hearing protection. Ideal for job sites that issue safety glasses to multiple workers. Meets ANSI Z87.1-2020 and CSA Z94.3-2007 high-impact requirements. ## Specifications | Attribute | Value | |---|---| | Product Type | Safety Glasses | | Ansi Rating | Z87.1-2020 | | Lens Material | Polycarbonate | | Lens Tint | Clear | | Anti Fog | Yes | | Anti Scratch | Yes | | Frame Color | Green/Black | | Style | Wraparound | | Over The Glass | No | | Weight (lbs) | 0.063 | | Barcode (UPC) | | ## What's Included - 20 pairs safety glasses Source: https://www.jaspecs.com/3m/safety-glasses/sf401af-20pk-3m-securefit-400-safety-glasses-clear-20-pack/