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White square thermoplastic traffic safety device, 6 inch sides, 5 inch height

STI

STI NEZ33-W Smoke and Acoustical Pathway Square traffic safety equipment

SKU CH-8GBJ-3W8GQ

A white thermoplastic square device that provides smoke and acoustical pathway protection, tested to UL 2043 and ASTM E90-09 standards

  • ColorWhite
  • MaterialHAWA
  • Smoke pathway tested to UL2043 standard
  • Acoustical performance meets STC ASTM E90-09
  • OSHA 29 CFR 1910.1200 compliant materials
  • Thermoplastic construction provides L Ratings tested durability

Smoke and Acoustical Pathway Device

The STI NEZ33-W is a square thermoplastic pathway device designed for facility and traffic safety applications. It provides a designated route for smoke and sound management in commercial or industrial environments. The white unit meets OSHA 29 CFR 1910.1200 and UL2043 standards for safety compliance. Installers handling conduit or duct penetrations will use this component.

Tested to L Ratings and STC/ASTME90-09

This device carries L Ratings and has been tested to STC/ASTME90-09 for acoustical performance. Projects requiring verified sound transmission class data should specify this model. Buyers needing a different fire rating classification or a non-thermoplastic material should select an alternative product. The square profile suits standard penetration openings.

Highlights

  • Smoke pathway tested to UL2043 standard
  • Acoustical performance meets STC ASTM E90-09
  • OSHA 29 CFR 1910.1200 compliant materials
  • Thermoplastic construction provides L Ratings tested durability

Specifications

ColorWhite
BrandSTI
MaterialHAWA

Questions about this item

How does the STC/ASTM E90-09 rating affect sound blocking once the NEZ33-W is installed in a wall or ceiling?

The STC/ASTM E90-09 rating confirms the device meets laboratory-tested sound transmission class requirements, so it maintains the assembly's acoustic barrier when fitted into a rated partition.

What does UL 2043 certification limit for the NEZ33-W when used in a plenum space?

UL 2043 certifies the thermoplastic unit meets low smoke and heat release criteria, allowing installation in air-handling plenums without adding significant fire hazard.

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