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Blue square thermoplastic pathway device 4.5 in wide with inner and outer shell assemblies

STI NEZ33 Smoke and Acoustic Pathway Device 4.5 in Blue

SKU CH-AB4S-M5KQT

A blue thermoplastic pathway device for cable trays with 6.7 sq in loading area, 4.5 in width, 5.5 in height and included mounting hardware

  • ColorBlue
  • Blue thermoplastic device fits non-rated walls and floors
  • 7 sq in cable loading area manages multiple cables
  • 5 in wide square profile suits standard pathways
  • 5 in overall height allows compact installations
  • Includes inner and outer shells plus mounting hardware

Cable pathway for non-rated assemblies

The STI NEZ33 is a blue thermoplastic device that seals cable penetrations through non-rated walls and floors. Its square body measures 4.5 inches wide and provides a 6.7 square inch loading area for cables or cable trays. Installers working on non-fire-rated barriers use it to maintain a smoke and acoustic seal without a fire rating requirement.

6.7 sq in cable loading area

The single specification that determines fit is the 6.7 square inch cable loading area, which dictates how many conductors or what tray size can pass through. The pathway accepts cable and cable trays in a square opening with an overall height of 5.5 inches and overall length of 4 inches. No fire rating applies, so it cannot be used where a rated assembly is required.

Two inner shells, two outer shells.

The kit ships with two inner shell assemblies, two outer shell assemblies, eight mounting parts, eight screws and labels so the pathway can be assembled and secured on site. All mounting hardware is included, allowing immediate installation on non-rated walls and floors without sourcing separate fasteners. The blue thermoplastic construction resists corrosion in indoor environments.

Highlights

  • Blue thermoplastic device fits non-rated walls and floors
  • 7 sq in cable loading area manages multiple cables
  • 5 in wide square profile suits standard pathways
  • 5 in overall height allows compact installations
  • Includes inner and outer shells plus mounting hardware

Specifications

ColorBlue
BrandSTI

Questions about this item

What does the 6.7 sq in cable loading area mean for my cable tray installation?

The 6.7 sq in cable loading area is the cross-sectional space available for cables passing through the device. It determines the maximum bundle size you can route through a single NEZ33 unit in non-rated walls or floors.

How does the thermoplastic body affect fire performance in non-rated walls and floors?

The thermoplastic body carries no fire rating. The device is approved only for non-rated walls and floors, so it cannot serve as a firestop in rated assemblies.

What clearance do I need for the 5.5 in overall height when mounting between trays?

The overall height is 5.5 in. Allow at least that much vertical clearance between the cable tray and the wall or floor penetration to fit the outer shell assemblies and mounting hardware.

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