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DRIFIRE® FR/AR DH Air™ Vented / Unvented Work Shirt

Premium Dual-Hazard FR/AR Protection: Arc Flash, Flash Fire, Lightweight, Breathable. Westex® DH Air™ TENCEL™ Lyocell, Modacrylic, Aramid Blend 5.5oz/186gsm - 9.1 CAL | CAT 2

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Since 1935, National Safety Apparel has been a leader in delivering advanced safety solutions for workers in high heat and industrial environments. NSA's extensive range of USA-made PPE includes protective workwear for workers facing extreme heat, arc flash, flash fire, molten metal, cut and abrasion hazards. Whether in foundries, mills or industrial manufacturing, NSA solutions are designed to safeguard workers in the toughest environments.

DRIFIRE® high-performance FR/AR workwear is built for those who demand both comfort and protection in tough environments. With innovative designs and advanced fabric technology, DRIFIRE® workwear works as hard as you do.

The same technology that keeps American troops safe abroad protects workers around the globe, helping workers to perform the most hazardous tasks with confidence. DRIFIRE® is mission-driven and performance-obsessed, delivering workwear that supports workers every step of the way.

APPLICATION: Arc Flash, Flash Fire, High-Risk Industrial Environments.

About DRIFIRE® FR/AR Product PDF NSA Measurement Guide

DRIFIRE® FR/AR DH Air™ Unvented Work Shirt

Unvented Grey
Unvented Khaki
Unvented Navy
Unvented Khaki Back

  • ATPV 9.1 CAL PPE CAT 2.

  • Inherently flame resistant.

  • Superior comfort.

  • Optimised moisture management.

  • Reduced risk of heat stress.

  • Highly breathable.

  • Simultaneous arc flash and flash fire protection. 

Westex® DH Air™ (5.5oz / 186gsm)

Westex® DH Air™ is a premium, lightweight FR/AR textile that provides all the amazing characteristics of Westex's classic DH lightweight fabric line. It is an excellent choice for arc flash and flash fire protection, providing superior breathability and moisture management, while maintaining colour consistency for the wearer. Weighing only 5.5oz/186gsm, Westex® DH Air™ with a 2x1 Twill weave construction, brings trusted protection into a significantly lighter, more wearable format.

The material is a patented Tri-Blend innovative weave consisting of TENCEL™ Lyocell, Modacrylic and Aramid fibres alongside anti-static components. Unlike fabrics treated with topical chemicals, Westex® DH Air™ protective properties are inherent to the fibres, meaning the FR/AR protection will never wash or wear out over the life of the garment.

View more NSA FR/AR Work Shirt Apparel by downloading the NSA 2026 Catalogue (Refer pages 19 & 20).

Download NSA Catalogue

Description - The DRIFIRE® DH Air™ FR/AR Vented Work Shirt features a vent design that actively allows hot air to exit the garment creating cooling and breathability. The covered back mesh panel wicks perspiration away while increasing mobility and performance.

Available in Unvented design.

  • NFPA 70E for Arc Flash, UL Certified to NFPA 2112 for Flash Fire, ASTM F1506 for Arc Flash, CSA Z462 for Arc Flash (Canada), OSHA 1910.269.
  • Fabric – Westex® DH Air™ TENCEL™ Lyocell, Modacrylic, Aramid blend.
  • Fabric Weight - 5.5oz / 186gsm.
  • ATPV - 9.1 cal/cm2 PPE CAT 2.
  • Colours (Vented) – Medium Blue, Navy, Khaki, Grey.
  • Colours (Unvented) – Navy, Khaki, Grey.
  • Product Numbers (Vented)
  • SHRA2TGV_ _ _ _ (Medium Blue)
  • SHRU4TGV_ _ _ _ (Navy)
  • SHRA3TGV_ _ _ _ (Khaki)
  • SHRU5TGV_ _ _ _ (Grey)
  • Product Numbers (Unvented)
  • SHR-DHN (Navy)
  • SHR-DHK (Khaki)
  • SHR-DHG (Grey)
  • Vented Back Design: Engineered to counter the natural rise of heat, DRIFIRE’s vented design actively pushes hot air out through the sides while drawing cooler air in for continuous airflow and comfort.
  • Internal Mesh Panels: Designed to wick away perspiration while providing built-in stretch for improved mobility and extended range of motion.
  • Lightweight and Breathable: The fabric is designed to provide all-day comfort while on the job, keeping you cool through long hours and tough conditions.
  • Front Chest Pockets: Two front pockets allow for quick access to essentials, keeping what you need within easy reach.
  • Quickly Identifiable Compliance: Sleeve is marked with CAT 2 and NFPA 2112 callouts for fast, on-the-job safety verification, making compliance easy to spot and streamlining site checks.
  • Inherent FR Protection: Flame-resistant performance that won’t wash or wear out.
  • Dual Hazard: Offers protection from both arc flash and flash fire hazards.
  • Sizes: SM - 3X, RG | MD - 3X, TL.
  • MOQ - 5 units (across different sizes to reach MOQ).
  • Read the garment label and launder per instructions on garment label.
  • Machine wash warm on maximum 60°C (140°F). Use mild detergent. Tumble dry on medium setting.
  • DO NOT iron, use chlorine bleach, hydrogen peroxide, fabric softener or starch.
  • Wash according to the instructions above to remove any contaminants in order to maintain fabric performance when the garment becomes soiled with dirt, grease or oils.
  • If contaminants cannot be removed after laundering, it is best to discontinue use of the garment.