Description
Intumescent Grille
The Envirograf® Fire and Smoke Grilles offer full protection against smoke as well as fire for openings in walls, ceilings, and also fire doors. Installed at the entry point of ventilation ducting. In the event of a fire, the intumescent expands and the grilles automatically seal off.
Grilles placed over ventilation ducting don’t require an intumescent plate. Fires and smoke grilles compartmentalize and prevent fire and smoke from spreading as intumescent expands to create a fire barrier. Smoke inhalation is a leading cause of fatalities where fires occur within households and buildings.
Grilles are designed with open slots which allow viewing, or also louvered for non-viewing.
- Available with a variety of resetting options, including manual, automatic, thermal as well as memory spring.
- Furthermore, a non-electrical grille containing a memory spring device operates in the temperature range of 50oC to 65oC, closing the shutter in under 60 seconds.
- Available in different sizes and also made to order.
Wired into existing fire/smoke alarm systems or into an Envirograf control unit. Tested to BS476 Part 20 (1987), achieving 66 minutes of integrity. Automatic closure grilles tested to BS476 Parts 20 & 22, achieving 73 minutes of fire protection.
Our patented range of passive fire ventilation products meet Document B of UK Building Regulations and tested to European Standards.