Level 01

Ventilation duct suspended from the ceiling. The air duct passes through part of the room, providing the natural movement of air flows. It is necessary for the installation of “smoky” zones where the output of combustion products is required.

CONSTRUCTION REQUIREMENTS

CONSTRUCTION TIME

  • INSTANT

Level 02

A basic ventilation duct with additional emergency bunker ventilation system of external airflow. Now, besides the removal of combustion products, there will be fresh air in the Hideout.

LEVEL 02 UPGRADE REQUIREMENTS

CONSTRUCTION TIME

  • 3 h