CL4FIRE 3” Thick Grease Ductwork Insulation

Product Decription:

Product is a Calcium / Magnesium / Silica for increased body solubility when compared to ceramic fiber insulation. Recommended for use under the same safety guidelines as fiberglass and mineral wool by the Ontario Construction Safety Association – 2005 edition Fibre-reinforced foil encapsulated to meet the durability requirements of the NFPA-96 standard. Canadian Tested and Approved for use as a gypsum shaft alternative. Made in Canada.


  • Thickness 3” (76mm)
  • Width 24” (610mm)
  • Length 12.5’ (3810mm)
  • Density 6 pcf
  • Flame Spread / Smoke Development: Less than 25 / 50
  • Insulation Melting Point: 2300°F (1260°C)


  • Installation Quantity: 3” overall thickness always required for Commercial Kitchen Grease Ductwork applications
  • Listed for Butt-Seam Pinning or Banding Installation Methods

Code Compliance:

  • Internal – ULC S144 Grease Duct Testing Requirement rated for 0”
  • clearance to combustible materials.
  • External – ISO 6944 Duct ‘A’ Standard.
  • Tested per NFPA-96 to meet all applicable Canadian Building Codes as a
  • gypsum shaft alternative.
  • Tested in ULC, a Standards Council of Canada accredited laboratory.

For more information involving installation techniques and material data sheets, please follow the attached manufacture link