Hose Stream 120®
A Steel-Tex® fire shutter tested to UL 10B for 1½ hours — including the hose stream test.

— APPLICATION
Openings in firewalls, fire barriers, and fire partitions. Y-axis deployment and retraction. The hose stream test is what separates UL 10B assemblies from smoke-only products.
— INSTALLED BACK TO BACK
Two systems, each with a 1½-hour fire protection rating, installed on opposing sides of the same opening in a fire wall are deemed equivalent in fire protection rating to one 3-hour system — Harmathy's Principle, per the IBC opening fire protection assemblies table. The CSI spec for the back-to-back configuration is in the downloads rail.
— KEY SPECIFICATIONS
| Fire rating | 1½ Hr to UL 10B with ASTM E2226 hose stream — for up to a 2-hr wall |
|---|---|
| Also tested | UL 1784 |
| Deployment | Y-axis deploy and retract · X and Z-axis horizontal installs |
| Fabric | Steel-Tex® — gray |
| Egress | Push-to-exit buttons · sliding retract egress variants available |
| Mounting | Threaded rods and unistruts · 120V to motor side of headbox |
| Activation | Fire alarm signal · leading-edge sensor, BMS relay, beam sensor options |
| Back-to-back | Two 1½-hr systems qualify as a 3-hr equivalent (Harmathy's Principle) |
| Codes | IBC Table 716 · IBC 707.6 · IBC 903.1.1 |
— COMPLIANCE
— SYSTEM DETAILS
Rendered from the engineering model



— IN THE FIELD
See it in action


— SPEC ASSISTANCE
Spec this product with an architect, not a sales rep.
Our A&E team details curtains into projects from concept design through construction drawings — at no cost. Call 888-917-8777 or write aeteam@ussmokeandfire.com.