E-Class fire curtains are systems that create a fire-resistant section to prevent the spread of fire from one compartment to another. They are designed to stop the spread of smoke and flames for a specified period (time given in minutes) but do not provide protection against heat radiation passing through the curtain.
The primary purpose of the curtain is to limit the spread of fire, enable safe evacuation, and protect property.

EW-Class fire curtains are systems designed to create fire-resistant sections to prevent the spread of fire from one compartment to another. These curtains stop the spread of smoke and flames while also limiting the transmission of heat radiation for a specified period (time given in minutes). The limit for heat radiation is set at 15 kW/m² at a distance of one meter from the curtain. The primary purpose of the curtain is to restrict the spread of fire and heat radiation, ensure safe evacuation, and protect property.

A smoke curtain is a system that creates a barrier to prevent the spread of smoke within a smoke zone. Its primary function is to limit the movement of smoke and hot gases from one smoke zone to another. Smoke curtains are classified into D-class and DH-class. D-class curtains maintain the integrity of the barrier at temperatures up to 600ºC. DH-class curtains maintain the integrity of the barrier at temperatures exceeding 600ºC. These curtains are primarily designed to limit smoke spread and enable safe evacuation.