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    Double wall stainless steel exhaust systems

    Chimneys made of stainless steel with high quality insulation material, available in different designs, materials and colors.

    DWCK-ZC

    Zero Clearance Grease Duct

    System features

    Specifications

    Description

    Double Wall Commercial Kitchen Exhaust and 2-Hour Fire Resistance Shaft/Enclosure Assembly

     

    Materials

    Made of all stainless steel (both inner and outer jacket)

    All supports and accessories are stainless steel

     

    Wall thickness

    Thickness per UL-1978 Listing

    Inner diameter

    6-36 inch
    (use Model DWFL-ZC for diameters 38” through 48”)

    Insulation

    3.25” high density ceramic fiber insulation

    Connection

    2.2” overlapping joint with Patent-Pending light weight technology and a double female socket permitting fastest alignment/installation on the market

    Locking band

    Attached to each part

    Literature

    Product data sheets and catalogs:

    Technical Data Sheet - DWCK-ZC

    Brochure Kitchen Exhaust CK Series

     

    Installation Manual:

    Installation CK Systems – All

     

    Submittal Records:

    DWCK-ZC Submittal Record
     

    UL Summaries:

    UL1978

    Main features

    • All-in-one grease duct and 2-hour fire rated shaft/enclosure assembly
    • Only 1/16 inch per foot slope is required
    • Factory CAD designs for installation ease
    • All lengths are field cutable for maximum flexibility
    • 100% stainless steel with Limited Lifetime Warranty
    • Smooth flow and known resistance for perfected factory pressure calculations

      Applications

      Stainless steel duct for connecting cooking appliances and kitchen hoods to the outdoors under negative or positive pressure. Design eliminates welding, second insulation trade, third trade for a fire-rated shaft, plus all the lengthy inspections in the field. Provides UL/ULC Listed and Certified all-in-one exhaust solutions.

      UL Listings (and ULC)

      UL-2221 Standard
      Fire Resistive Grease Duct Enclosure Assemblies

       

      UL-1978 Standard
      Grease Duct
      (ULC-S662 Standard for Factory-Built Grease Duct)

       

      Additional UL/ULC 20" W.C. Pressure Listing

      25 years warranty!