LVH20S Intumescent Air Transfer Grille

Fire + smoke resistant

The LVH20S damper is a unique combination of intumescent slats to provide two hour fire resistance & excellent insulation properties together with a servo powered set of shutter plates that control cold & warm smoke. Ideal for low velocity air handling systems, it can be operated as a stand-alone unit or in multiple units. It can be interfaced with a fire alarm panel through the Lorient Talkback damper control system.

System specification

Application Suitable for walls
Thickness 47mm
Free area Approx 30% free area
Material Z275 galvanised steel. Metal slats with an intumescent core. Electro mechanically operated smoke shutter mechanism
Finish Silver as standard
Test evidence Fire: AS1530.4: 2014, BS 476-20: 1987 & BS EN 1364-5: 2017. Smoke: BS 476-31.1: 1983 (shutterplate)
Performance Can be used to provide up to 120 minutes resistance to fire & cold smoke. May provide 30mins insulation when used in conjunction with a cover grille
Use with Talkback damper control system. Conductor hinges. Optional Alarm Monitoring System (AMS) + battery backup. Optional cover grille