Fire endurance EI60
- entry in air shafts;
- entry in system raceways;
- output on roof;
- protection transformer.
The box – angular, built-in lock.
The polymeric powdered dye staff of the company “DUPONT”(France), choice of the colour is on catalogue RAL company of the producer.
The fire-prevention hatches are used, where it ispossible, instead of fire-prevention doors (that vastly more cheaply).