FLAMEBAR FOR KITCHEN EXHAUST GREASE DUCT
INCREASE SAFETY WITH A BOLT-TOGETHER GREASE DUCT SYSTEM
Grease ducts pose a unique hazard in kitchen exhausts because they build up deposits of grease on their internal surfaces. If they are not properly insulated, a fire in an adjacent zone through which the duct passes could ignite these internal deposits and cause a flashback to the served kitchen hood.
Flamebar Grease Duct provides an innovative way to safely ventilate grease-laden kitchen air. As a galvanized bolt-together system, it removes the need for welding associated with conventional black iron and stainless steel grease duct installations. By removing welding from the installation, Flamebar Grease Duct significantly cuts field labor costs—eliminating the need for expensive field welders, fire watch, welding permits, and welding equipment.
Unique No-Weld Design
The no-weld design of Flamebar Grease Duct is ideal for contractors facing specialty welding labor shortages since it reduces the number of on-site personnel required for the job. It also allows contractors to avoid OSHA concerns and liability issues associated with welding, the leading cause of fires on construction sites. Flamebar Grease Duct is a safer, faster, and more efficient installation option for buildings sensitive to hot work, such as wood frame construction. The system is easily modified and repaired on-site, making it compatible with various construction scenarios.
SAVE UP TO 75% ON INSTALLATION TIME
As a bolt-together system, Flamebar Grease Duct leads to major savings on time and budget.
- The no-weld system removes the need for expensive field welders, fire watchmen, welding permits, and equipment.
- Bolt-together joints cut installation time by up to 75%.
- Pre-installed components speed up installations and assemblies.
- A field-modifiable and repairable design minimizes downtime and keeps projects on schedule.
- Flamebar Grease Duct is suitable for various construction scenarios, including buildings sensitive to hot work, like retrofits, renovations, and wood frame construction.
KITCHENS IN BUILDINGS THROUGHOUT THE UNITED STATES USE FLAMEBAR TO PROTECT AGAINST GREASE FIRES
Kitchen exhaust systems serving commercial kitchen hoods (type 1 hood exhaust) are required per NFPA 96 to be separate and independent of any other systems to protect from a fire in an adjacent zone. Flamebar Grease Duct is a fully compliant solution used in kitchens across the United States to safely ventilate flammable vapors and prevent the spread of fire from zone to zone.
Flamebar Grease Duct components are tested and listed by Intertek to fire resistance standards ASTM E2336 and UL 1978 (per ICC-AC 101.2). Readily available in all rectangular sizes, they can be custom fabricated to your engineers’ specifications. Pre-installed access doors, gaskets, and G-clamps further streamline the installation process.
Who We Work With
Flamebar fire-rated HVAC systems benefit different team members throughout the construction process. Learn more below.
Engineers
Leading engineering firms in the US and worldwide simplify their designs by using Flamebar as their holistic fire-rated solution.
Mechanical / Sheet Metal
Flamebar simplifies the installation process, saving valuable project time.
General Contractors
Conquest delivers just-in-time (JIT) multi-hour fire resistive assemblies and ductwork directly to project sites
Owners / Developers
Flamebar replaces multiple disjointed materials with one holistic solution, resulting in a lower total install cost.
FREQUENTLY ASKED QUESTIONS
Listed grease duct installations must comply with NFPA 96 and the applicable mechanical code. Key requirements include liquid-tight joints throughout, cleanout panels at code-required intervals, compatibility with the hood suppression system, and a hanger system designed by the fire-rated duct manufacturer. Do not install field-fabricated grease duct components in place of factory-built listed parts.
Flamebar Grease Duct uses a bolted connection approach tested and listed under ASTM E2336 and ISO 6944. Factory fabrication provides controlled quality and listing integrity not dependent on field welding skills. All joints must be liquid-tight per NFPA 96. The performance basis for the assembly is the tested listing, not field workmanship on welds. There are significant labor savings using the Flamebar bolt-together approach vs. traditional welding of black iron or stainless steel.
Yes. Per NFPA 96, all grease duct joints and connections must be liquid-tight. This applies to both field-welded and factory-bolted grease duct systems. For Flamebar Grease Duct, joint types and sealants must match the listing documentation. Cleanout panels can be provided at code-required intervals for access and inspection.