fireboard a. Main Consistance: Expanded perlite, inorganic glue b. Features: non-combustible, non-toxic, weatherproof, heat insulation and preservation,sound insulation. c.Density: 280kg/m3-300kg/m3 d. Fireproof limit:30mins-120mins e. Fireproof temperature: 1200c f.Standard size: 2100mm*900mm g. Thickness: 30mm-70mm h. Application: Core of fire door, wall material i.Certificates Non-combustible Report, A1 rate, GB 8624-2006 Non-toxic Report, AQ1 rate, GB/T 20285-2006 Service of machining, perlite sandwich board are also available as per your requirements!