YDK: In shaft 1049ºC - 120 minutes, Out of shaft 1006ºC - 90 minutes
The shaft lid protects your electrical and mechanical installations on the structure in a safe and decorative way. In the event of a possible fire, the installation shafts allow the fire to move quickly to the upper zones by making a chimney effect, preventing the use of the installation shaft cover and the fires that occur in the neighborhood to reach the installation sites and fires that may occur in the installation shafts.

Product Features:

• The fixed outer frame and the moving inner frame are made of aluminum material resistant to bending and buckling. Fire Wicks Graphite, Drywall A1 boardex
• YDK Series control flaps, the Fire Resistant Shaft Cover provide all the functionality, as well as keeping the fire area at minimum level for 90 minutes and allowing people to escape to safe zones. Smoke and heat are two key elements that cause damage to the fire, and the Shaft Cover does not allow exposure to these elements.
• The outer frame is applied as a standard by screwing on the gypsum board