LVN25S Intumescent Air Transfer Grille

Non-Vision Fire + Smoke Resistant

The LVN25S provides a unique solution to the problem of containing both fire + smoke in emergency conditions yet offering good air transfer through doors in everyday use. Using the same intumescent louvred slat configuration as the LVN25, but incorporating an electro mechanically operated smoke shutter mechanism. Can provide up to 60 minutes fire + smoke resistance.

System specification

Application Suitable for FD30 & FD60 doors, greater than 50mm. Note: in applications where high levels of humidity or wetness are anticipated, please speak to our Technical Department for alternatives
Thickness 2 pieces x 25mm
Free area Approx 30% free area
Material Rigid PVC slats with an intumescent core. Steel flange. Electro mechanically operated smoke shutter mechanism
Finish Silver as standard
Use with Talkback damper control system. Conductor hinges. Optional Alarm Monitoring System (AMS) + battery backup
Test evidence Fire: BS 476-20 + 22:1987. Smoke: BS 476-31.1: 1983 (shutterplate)
Performance Can be used to provide up to 60 minutes resistance to fire + cold smoke. EI rating of 60 minutes in accordance with BS 476 (Test report: Applus 19/19940-1428)
Certifire CF564