The Security Steel Door Range SD4260 consist of burglary resistant steel doors that fulfills the RC3 classification. It also fulfills fire classification according to EI2 / EW60 in combination with both warm and cold smoke (Sa, s200). The doors are available with two different sound classifications, eigther Rw38dB (SD31) or Rw43dB (SD32). The door is applicable as apartment entrance doors and for other situations where a high quality and secure product is demanded; e.g. apartments, hospitals, hotels, restaurants as well as parking lots, basements, technical rooms and staircases.