National Safety Apparel DF2-CM-446LS-NB-LG Fr Base Layer Shirt

Product Description

The NATIONAL SAFETY APPAREL DF2-CM-446LS-NB-LG is a flame-resistant base layer shirt designed for workers in environments with arc flash, flash fire, or other thermal hazard exposures. Constructed from nylon and rated at Hazard Protection Level 1, this shirt is cut in a Large size to fit chest measurements of 38 to 42 inches. A zipper closure allows for fast donning and doffing in field conditions. The navy blue color meets common workwear requirements across industrial and utility sectors. Licensed electricians, utility linemen, oil and gas workers, and industrial maintenance technicians are the primary installers and end users of this garment.

This base layer shirt is suited for residential and commercial electrical work, petrochemical plant operations, utility line work, and other occupations governed by NFPA 70E or OSHA arc flash and flash fire regulations. It functions as a first-layer garment worn directly against the skin beneath other FR-rated outerwear. The zipper front facilitates compliance layering in systems where secondary PPE is required over the base layer. No pockets are present, keeping the profile low-profile under outer layers.

Key Features

• Flame-resistant and flame-retardant nylon construction rated at Hazardous Protection Level 1
• Fits chest sizes 38 to 42 inches in Large sizing
• Zipper closure for quick donning and doffing
• Navy blue color meets common industrial workwear standards
• Zero-pocket design maintains a streamlined profile under outerwear
• Lightweight at 0.63 pounds for all-day comfort during extended shifts

Compatibility

Designed as an OEM-style FR base layer for use in personal protective equipment systems requiring Hazard Protection Level 1 thermal garments, typically paired with compliant FR outerwear in arc flash or flash fire environments.

Installation Notes

FR base layer shirts are selected and worn by the end user in accordance with a site-specific arc flash hazard assessment conducted by a qualified person per NFPA 70E requirements. Inspect the garment before each use for tears, contamination, or damage that could compromise FR performance. Do not launder with bleach, fabric softeners, or non-FR-approved detergents, as these can degrade flame-resistant properties. Replace the garment immediately if the FR integrity is compromised.