Sliding tunnel doors

Meet the requirements of the Directorate-General for Public Works and Water Management

At least 120 minutes fire resistance (in accordance with Directorate-General for Public Works and Water Management requirements)

Also available as a hinged door

Merford tunnel doors are available as MHC type 1 and 2 sliding doors. These tunnel doors meet the strict requirements of the Directorate-General for Public Works and Water Management. These requirements, which are a lot stricter than the NEN standards, stipulate that the door has to be fire-resistant for two hours at a temperature of 1350 °C and a very rapid increase in temperature.

The MHC 1 type door meets the 120 minutes fire resistance requirement in accordance with the Directorate-General for Public Works and Water Management time temperature curve. MHC 2 type doors are even fire-resistant for 180 minutes in accordance with the same curve. This type is also airtight and can be fitted to the fire side of the door.

Other properties are:

Flame-tight: 180 minutes

Thermally insulated against radiation: 180 minutes

Smoke-tight in accordance with NEN 6075: 270 minutes