STI Smoke and Acoustical Pathway Device: Square, 5.5 in Overall Ht
The STI Smoke and Acoustical Pathway Device: Square (MPN NEZ33) is a firestop passthrough for cables, measuring 5.5 in overall height and 4 in overall length. This square-shaped device does not include mounting…
SKU 3G-OTH-553352
Need installation or engineering help?
Ask a question
Product Description
The STI Smoke and Acoustical Pathway Device: Square (MPN NEZ33) is a firestop passthrough for cables, measuring 5.5 in overall height and 4 in overall length. This square-shaped device does not include mounting plates, providing a direct cable pathway solution for firestop applications.
Frequently Asked Questions
What is the STI NEZ33 smoke and acoustical pathway device used for?
The STI NEZ33 is a firestop passthrough for cables, designed to seal openings in fire-rated walls or floors while maintaining smoke and acoustical integrity. It provides a direct cable pathway solution for commercial and industrial firestop applications.
What are the specifications of the STI NEZ33 firestop passthrough?
The STI NEZ33 is a square-shaped firestop passthrough with an overall height of 5.5 in and overall length of 4 in. It does not include mounting plates. The manufacturer part number is NEZ33, and the brand is STI.
Where to buy the STI NEZ33 firestop passthrough worldwide?
3G Electric supplies the STI NEZ33 firestop passthrough to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this square cable pathway device.
How to install the STI NEZ33 smoke and acoustical pathway device?
Install the STI NEZ33 by cutting a square opening in the fire-rated barrier, inserting the device, and sealing around it with approved firestop caulk or mortar. Ensure cables pass through without exceeding the device's rated capacity. Follow local fire codes and manufacturer guidelines.
STI Products
3G Electric supplies STI firestop passthroughs for cables. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









