With up to 120 minutes & 240 minutes fire resistance
	Integrity & Insulation (Installation steps)
	Tested to BS476: Part 24 & AS1530: Part 4 requirement

Duct span up to maximum 1500mm wide

The above construction of fire resistant encasements around steel ducts is up to 1500mm wide. However, PROMATECT®-L500 duct systems are approved for up to 10m wide. Variations on supporting components for duct width up to 15m are available on request, please consult Promat Technical Department. For impact resistant systems in accordance with the criteria BS5669: Part 1 exposed to external and internal fire, 50mm thick PROMATECT®-L500 boards are required. Insulation will be as Duct type B (exposed to internal fire).

	With up to 120 minutes & 240 minutes fire resistance
	Integrity & Insulation
	Tested to BS476: Part 24 & AS1530: Part 4 requirement

For duct spanning between 3000mm to maximum 6000mm. Additional support channel at mid span are required, please consult Promat Technical Department for construction details.

Fire resistant ducts can be formed where the substrate from which the steel duct is supported provides protection to some areas, thus 1, 2 and 3-sided solutions in combination with walls and ceilings are available.
more...

Download this full application detail on PDF version.