CL4 Fire
Building Products Listing Program
- CL4 Fire
- Mineral-fiber Fireproofing Materials – Grease Ducts
- F476-4
- F476-4
- Oct 27, 2022
- September 14, 2023
- N/A
-
ASTM E2336 Standard Test Methods for Fire Resistive Grease Duct
Enclosure SystemsCAN/ULC S144 Standard Method of Fire Resistance Test – Grease Duct
AssembliesASTM E136 Standard Test Method for Behavior of Materials in a
Vertical Tube Furnace at 750oCCAN/ULC S102 Standard Method of Test for Surface Burning
Characteristics of building Materials and Assemblies -
CL4Fire Blue Label Mineral-fiber Fireproofing Insulation
CL4Fire Red Label & CL4Fire Code 96 Mineral-fiber Fireproofing Insulation -
CL4Fire products have surface burning characteristics determined in accordance with
CAN/ULC S102 as outlined below.Product Nominal
Density
lbs/ft3
(kg/m3)Flame
Spread
IndexSmoke
Developed
IndexCL4Fire Blue Label 8 (128) 10 10 CL4Fire Red Label 6 (96) CL4Fire Code 96* 6 (96) Note: CL4Fire Code 96 follows all the same installation requirements as CL4Fire Red
Label but has an integral wire mesh per NFPA 96 4.2.3.2 for added support.CL4Fire Blue Label, Cl4Fire Red Label and CL4Fire Code 96 are classified as noncombustible
per ASTM E136.CL4Fire Grease Duct Ratings for Use in ASTM E2336 / CAN/ULC S144 Required Assemblies
Product Installation Minimum
Installed
Thickness
inches
(mm)Nominal
Density
lbs/ft3
(kg/m3)Fire Rating
Achieved
HoursCL4Fire Blue
Label2 Layers 1 1/2″
(38mm) Compressed
Butt Joints or Overlap
Minimum 3 inches
(76 mm) at Seams.3″
(76mm)8
(128mm)2 1 Layer 3 inch (76
mm) Compressed
Butt Joints or Overlap
Minimum 3 inches
(76 mm) at Seams.3″
(76mm)8
(128)2 CL4Fire Red
Label or CL4Fire
Code 962 Layers 1 1/2″
(38mm) Compressed
Butt Joints or Overlap
Minimum 3 inches
(76 mm) at Seams.3″
(76mm)6
(96)2 1 Layer 3 inch (76
mm) Compressed
Butt Joints or Overlap
Minimum 3 inches
(76 mm) at Seams.3″
(76mm)6
(96)2 CL4Fire is limited for use to Grease ducts of the following:
• Maximum Duct Size: 1296 in2 (8361 cm2)
• Maximum Width dimension of 92 cm (36 in) H x 92 cm (36 in) W. or
• Maximum Height dimension of 122 cm (48 in) H x 68 cm (27 in) W.
• Minimum duct gauge of 16 gauge (1.6 mm).
• Ducting is limited to rectangular, square or circular cross-section.
• Ducting is to conform to Sheet Metal and Air Conditioning Contractors’ National
Association (SMACNA) requirements.
• When used CL4Fire Code 96 should only be used in the outer wrap layer.Product is to be installed per this listing.F405-1-4
Please refer to the Listing Document Link at the top of the page for Installation Guide
The materials, products or systems listed in this directory have been qualified to bear the QAI Listing Mark under the conditions stated with each Listing. Only those products bearing the QAI Listing Mark are considered to be listed by QAI.
The standard herein listed is the currently accepted version within the relevant certification scheme, code or other requirements unless otherwise noted. Transition periods may apply. Upon request, QAI will provide information about the validity of any of its certifications.
No warrantee is expressed or implied, and no guarantee is provided that any jurisdictional authority will accept the Listing found herein. The appropriate authorities should be contacted regarding the acceptability of any given Listing.
Visit the QAI Online Listing Directory located at www.qai.org for the most up to date version of this Listing and to validate that this QAI Listing is active. Questions regarding this listing may be directed to info@qai.org. Please include the listing number in the request.
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