1. Introduction
This manual provides essential information for the proper installation, operation, and maintenance of the USASEALING STI EZD22 Series 22 EZ Path Device & Wall Plate Assembly. The EZD22 is a comprehensive solution designed for firestopping electrical penetrations, creating a reliable barrier against the spread of fire and smoke. It is UL tested and certified for low leakage and its full capacity range.
2. Safety Information
Always adhere to local building codes, electrical codes, and fire safety regulations during installation and use. Installation should be performed by qualified personnel. Consult with a certified electrician or fire safety professional if you have any doubts regarding the application or installation process. Do not modify the device. Ensure the device is free from damage before installation.
3. Product Overview
The STI EZD22 Series 22 EZ Path Device is a pre-engineered firestop system for cable penetrations through fire-rated walls and floors. It is designed for ease of installation and eliminates the need for traditional firestopping methods, remaining firestopped at all stages of use. The device is constructed from galvanized steel and features an orange finish.

Figure 1: Top view of the USASEALING STI EZD22 Series 22 EZ Path Device, showing its compact design.

Figure 2: Side view of the EZD22 device, displaying UL and FM approvals, and manufacturer information.
4. Setup and Installation
The EZD22 device is designed for straightforward installation, often eliminating the need for complex firestopping procedures. It is intended for use in through-penetration applications involving electrical cables. Ensure the opening in the wall or floor is appropriately sized for the device. Secure the device firmly in place according to manufacturer guidelines and local codes. No additional firestopping compounds are typically required with this system.

Figure 3: The EZD22 device as supplied, ready for installation.
5. Operating Instructions
The STI EZD22 is a passive fire protection device. Once correctly installed, it functions continuously as a fire and smoke barrier for electrical cable penetrations. Its design ensures that the firestopping integrity is maintained even when cables are added, removed, or changed, providing protection at all stages of its use. No active user intervention is required for its operation.
6. Maintenance
Regular maintenance for the EZD22 device primarily involves periodic visual inspection. Inspect the device and surrounding area for any signs of physical damage, tampering, or degradation. Ensure that the device remains securely fastened and that no unauthorized modifications have been made. If any damage is observed, consult with a qualified professional for assessment and repair or replacement.
7. Troubleshooting
As a passive firestop device, the EZD22 does not typically require troubleshooting in the traditional sense. If you encounter any issues, consider the following:
- Physical Damage: If the device appears damaged, compromised, or has been altered, it may no longer provide adequate fire protection. It should be inspected by a fire safety professional and replaced if necessary.
- Improper Installation: If there are concerns about the initial installation, such as gaps around the device or loose mounting, consult with a qualified installer or fire safety expert to ensure compliance with codes and manufacturer instructions.
8. Specifications
- Model Number: EZD22
- Brand: USASEALING
- Manufacturer: STI Firestop
- Material: Galvanized Steel
- Color: Orange
- Item Weight: 0.5 Pounds
- Nominal Wall Thickness: 0.05 inches
- UPC: 610373766054, 730573000229

Figure 4: Product packaging displaying the Cat. No. EZD22 and UPC information.
9. Warranty Information
Specific warranty details for the USASEALING STI EZD22 Series 22 EZ Path Device are not provided in this manual. For information regarding product warranty, please contact the manufacturer, STI Firestop, or your authorized seller, USASEALING, directly.
10. Support
For technical assistance, product inquiries, or support, please contact:
- Manufacturer: STI Firestop
- Website: www.stifirestop.com
- Seller: USASEALING