Grease Duct

Grease Duct Product Family

“The Safest Choice”

For over 75 years, Van-Packer has supplied venting products to the Commercial and Industrial heating and process markets. We have provided round, UL listed and labeled factory built grease since 1993 to the commercial kitchen ventilation market. In 2017 we added rectangular UL listed factory built grease duct to the Van-Packer product family.

UL 2221 / ULC S144 Listed - Zero Clearance Round and Rectangular Grease Duct

Per NFPA 96, Chapter 4, Section 4.3.3.1: “Factory-built grease duct protection system shall be listed in accordance with UL 2221”

Rectangular

GRZ

Round

GZ

UL 1978 / ULC S662 Listed - Reduced Clearance Round and Rectangular Grease Duct

Rectangular

GRM
GRS

GRZ – Rectangular

Model GRZ is an industry leader for double wall pre-fabricated grease duct systems.  It is the first listed rectangular grease duct to UL 2221 / ULC S144 for zero clearance applications.  The model GRZ is also a 2 hour fire rated duct. 

Product features and benefits:

  • Factory welded (AWS certified welders)
  • UL Inspected fabrication.
  • Modular sections
  • No field welding required
  • Reduced installation labor
  • Reduced slope (1/8” per foot, up to 75’ long runs)
  • Exceptional flexibility (6:1 aspect ratio)
  • UL Listed system
  • 2 hour fired rated (Does not require fire rated chase)
  • Factory warranty

Model GRZ can be intermixed with our other round and rectangular grease duct products to maximize versatility and minimize costs while still offering the SAFEST kitchen ventilation system you can get.  GRZ zero clearance grease duct is the safest choice in the industry over traditional field-fabricated black iron grease duct.

GRZ rectangular grease duct is suitable for interior and exterior installations. For more information on our GRZ product line, please watch our Model GRZ introduction video below.

If you are interested in viewing our Hotsy Pressure Test playlist, please click here.

GRM – Rectangular

Model GRM rectangular double wall grease ducts are listed by UL as reduced clearance (2” to 17″) to combustibles “Grease Duct Assembly” and as “Grease Ducts for Restaurant Cooking Appliances” and has been tested in accordance with the procedures and methods set forth by UL 1978 / ULC S662 (Standard for Grease Ducts/Standard for Factory-Build Grease Ducts).

Product features and benefits:

  • Factory welded (AWS certified welders)
  • UL Inspected fabrication.
  • Modular sections
  • No field welding
  • Reduced installation labor
  • Reduced slope (1/8” per foot, up to 75’)
  • Exceptional flexibility (6:1 aspect ratio)
  • UL Listed system
  • Factory warranty

GRS – Rectangular

Model GRS rectangular single wall grease ducts are listed by UL as 18″ clearance to combustibles “Grease Duct Assembly” and as “Grease Ducts for Restaurant Cooking Appliances” and has been tested in accordance with the procedures and methods set forth by UL 1978 / ULC S662 (Standard for Grease Ducts/Standard for Factory-Build Grease Ducts).

Product features and benefits:

  • Factory welded (AWS certified welders)
  • UL Inspected fabrication.
  • Modular sections
  • No field welding
  • Reduced installation labor
  • Reduced slope (1/8” per foot, up to 75’)
  • Exceptional flexibility (6:1 aspect ratio)
  • UL Listed system
  • Factory warranty

GZ - Round

Model GZ grease ducts are suitable for the removal of smoke and grease laden vapors from commercial, industrial, institutional, and similar cooking applications.  It is listed grease duct to UL 2221 / ULC S144 for zero clearance applications.  The model GZ is also a 2 hour fire rated duct. 

Model GZ Features and Benefits:

  • Factory welded (AWS certified welders)
  • UL Inspected fabrication.
  • Modular sections
  • No field welding required
  • Reduced installation labor
  • Reduced slope (1/16” per foot, up to 75’ long runs)
  • Space savings for vertical and horizontal installation
  • Access doors and drains factory fabricated adhering to standards & specifications
  • UL Listed system
  • 2 hour fired rated (Does not require fire rated chase)
  • Factory warranty

Please watch our Model GZ introduction video below. If you are interested in viewing our Hotsy GZ Pressure Test playlist, please click here.

GA & G Plus - Round

Model GA is standard with 1″ air space between the liner and shell. Optional material insulation of 1″, 2″, 3″ or 4″ thickness is available for Model G Plus. Our GA & G plus series is applied in situations where open shafts are available and zero clearance is not required. Inside diameters of 6″ through 36″ come standard with 20-gauge type 304 stainless steel inner liners. Other option are:

  • This UL listed line offers tees, elbows, supports and more.
  • Optional materials such as 316 stainless steel for inner liner and outer shell as well as other materials and gauges are available upon request.