ventilation and smoke extraction ducts.

the FIREGUARD® DUCT boards are asbestos-free fibre cement panels. They undergo a treatment that makes the finished product totally stable in the event of fire, with high mechanical strength and resistance to atmospheric humidity. They are non-combustible (reaction to fire class A1) in accordance with classification report Applus 13/7092-2932 part. 2. Supplied as rigid panels with high mechanical stability, abrasion resistance and good performance under heat and temperature.
the FIREGUARD® DUCT boards, through their high mechanical strength, allow use in the most severe conditions. They are easily workable by machine or by hand. Modern power tools such as circular saws are certainly advisable where speed and precision in working the product are required. The boards are glued on the edges with Fireguard Glue and screwed together.
The contents of this page are summarised from the official technical data sheet PDF, which remains the reference document.