---
title: What is UL 300?
description: Neglecting to adhere to the UL 300 codes is deliberate endangerment of all people working in and visiting your kitchen. Learn more about UL 300 standards.
image: https://blog.koorsen.com/hubfs/Blogs/Products%20and%20Services/Kitchen%20Fire%20Suppression/ThinkstockPhotos-178030228.jpg
---

[![Koorsen Fire & Security](https://blog.koorsen.com/hs-fs/hubfs/KoorsenFireSecurity_April2017/Images/koorsen-logo.png?width=209&height=50&name=koorsen-logo.png "Koorsen Fire & Security")](https://www.koorsen.com/)

[CONTACT US](https://www.koorsen.com/contact-us/) [BILL PAY](https://www.koorsen.com/koorsen-payments/)

[1.866.311.7753](tel:8663117753)

- [About Us](https://www.koorsen.com/about-us/) 
    - [History](https://www.koorsen.com/about-us/history/)
    - [Case Studies](https://blog.koorsen.com/case-studies)
    - [Koorsen Companies](https://www.koorsen.com/about-us/companies/)
    - [Koorsen Training Center](https://www.koorsen.com/about-us/training-center/)
    - [Kasey Program](https://www.koorsen.com/about-us/kasey-program/)
    - [Pay Bill](https://www.koorsen.com/koorsen-payments/)
- [Products + Services](https://www.koorsen.com/products-services/) 
    - [Fire Protection](https://www.koorsen.com/products-services/fire-protection/)
    - [Security](https://www.koorsen.com/products-services/security/)
    - [Communications](https://www.koorsen.com/products-services/communications/)
    - [Mobile Equipment Solutions](https://www.koorsen.com/products-services/mobile-equipment-solutions/)
    - [Additional Products + Services](https://www.koorsen.com/products-services/#additional)
- [Industries](https://www.koorsen.com/industries/) 
    - [Healthcare](https://www.koorsen.com/industries/healthcare/)
    - [Industrial](https://www.koorsen.com/industries/industrial/)
    - [Education](https://www.koorsen.com/industries/education/)
    - [Restaurants](https://www.koorsen.com/industries/restaurants/)
    - [Property Management](https://www.koorsen.com/industries/property-management/)
    - [Hospitality](https://www.koorsen.com/industries/hospitality/)
    - [Retail](https://www.koorsen.com/industries/retail/)
    - [Construction](https://www.koorsen.com/industries/construction/)
- [Locations](https://www.koorsen.com/locations/)
- [News](https://blog.koorsen.com) 
    - [Koorsen Blog](https://blog.koorsen.com)
    - [Koorsen In The News](https://www.koorsen.com/in-the-news/)
    - [Kasey the Dog Blog](https://blog.koorsen.com/kaseys-adventures)
- [Careers](https://www.koorsen.com/about-us/careers/)

# What is UL 300?

 Posted May 14, 2018  by [Koorsen Fire & Security](https://blog.koorsen.com/author/koorsen-fire-security)

![What is UL 300?](https://blog.koorsen.com/hs-fs/hubfs/Blogs/Products%20and%20Services/Kitchen%20Fire%20Suppression/ThinkstockPhotos-178030228.jpg?width=600&name=ThinkstockPhotos-178030228.jpg)

Commercial kitchens, like everything else around us, have advanced drastically in the past 20 years. Unfortunately, along with the advancements, fire risks have also increased, which led to the creation of fire protection standards such as UL 300.

[![Kitchen Hood System Questions? CLICK TO CONTACT US NOW](https://no-cache.hubspot.com/cta/default/1973249/0b0a4a08-e106-4ecb-9c6e-f0f08cec3183.png)](https://cta-redirect.hubspot.com/cta/redirect/1973249/0b0a4a08-e106-4ecb-9c6e-f0f08cec3183)

Yet, only in the past four years has the NFPA officially written [UL 300 compliance](https://blog.koorsen.com/understanding-the-ul-300-kitchen-fire-suppression-system-requirements-in-the-nfpa-17-a) into their code, and numerous kitchens still resist updating to meet the new requirements.

As the vast majority of states have now adopted these standards, it’s time for commercial kitchen owners to get serious.

## What Exactly Does UL 300 Require

UL 300 originated as a fire safety testing standard performed by [Underwriters Laboratories](https://www.ul.com/) (UL). Appliance companies submit their products to UL for testing. Upon meeting specific fire safety requirements and passing the tests, the products earn the UL label.

As time passed, UL 300 has grown to also include [fire suppression systems for commercial kitchens](https://blog.koorsen.com/understanding-the-ul-300-kitchen-fire-suppression-system-requirements-in-the-nfpa-17-a). UL 300 systems require wet chemical suppression to both smother and cool liquid kitchen fires.

Besides just requiring wet chemical suppression, UL 300 systems also indicate new locations for nozzle placement, the inclusion of a manual pull station, automatic shut-offs, and new maintenance schedules for suppression systems, hoods, ducts, and filters.

In most states, after NFPA adopts UL 300, newly built kitchens, or kitchens that need to reposition equipment, must use UL 300-listed kitchen equipment and adhere to the updated suppression system requirements.

## History & Logic Behind UL 300

UL 300 was implemented for valid reasons.

Over the past twenty years, [commercial kitchens](https://blog.koorsen.com/many-commercial-kitchens-are-just-one-fire-away-from-disaster-is-yours-one-of-them) have switched to the use of vegetable oils and higher energy-efficient appliances. These changes keep cooking oils and the metals they are in much hotter, resulting in an increase in the potency of commercial kitchen fires.

Previous [dry chemical suppression systems](https://www.koorsen.com/products-services/fire-protection/dry-chemical-fire-suppression-systems/) are simply not enough to effectively stop these much more powerful fires. Fires originating from vegetable oil and newer appliances require up to six times the amount of suppressing agent to reign in the fire! Which is why new systems had to be adopted.

## Why Comply?

The first, and what should be the most obvious, answer to this question is: SAFETY.

Safety for your employees and safety for your patrons. At this point, neglecting to adhere to the UL 300 codes is deliberate endangerment of all people working in and visiting your kitchen.

The second reason is to protect your investment. Few restaurants can survive the financial hit that results from a fire that gets out of control. Furthermore, most insurance companies will hit you with high rates if you are not compliant.

Finally, as states have now nearly universally embraced the new NFPA standards for UL 300, complying means avoiding fines and potential litigation.

## How to Meet UL 300 Standards

If you are unsure of whether your kitchen is fully meeting the new UL 300 standards, call in the fire experts at Koorsen. With over 70 years in the industry, they know exactly what your commercial kitchen needs to be safe and compliant.

[![Questions! Contact Us Now!](https://no-cache.hubspot.com/cta/default/1973249/27550866-4d2c-46fb-8ec4-ef118de52673.png)](https://cta-redirect.hubspot.com/cta/redirect/1973249/27550866-4d2c-46fb-8ec4-ef118de52673)

- [Tweet](https://twitter.com/share)

 Topics: [Kitchen Fire Suppression](https://blog.koorsen.com/topic/kitchen-fire-suppression), [Restaurant Industry](https://blog.koorsen.com/topic/restaurant-industry)

## Contact Us Now!

*Disclaimer: The information in this article is for informational purposes only. It is believed to be reliable, but Koorsen Fire & Security assumes no responsibility or liability for any errors or omissions in the content of this article. It does not constitute professional advice. The user of this article or the product(s) is responsible for verifying the information's accuracy from all available sources, including the product manufacturer. The authority having jurisdiction should be contacted for code interpretations.* 

### Related posts

[Emergency Shut-Off Systems: Safeguarding Kitchens in Crisis](https://blog.koorsen.com/emergency-shut-off-systems-safeguarding-kitchens-in-crisis)

[Why Should My Staff Take Classes On Kitchen Hood Suppression Systems?](https://blog.koorsen.com/empowering-kitchen-staff-educational-content-for-effective-use-of-kitchen-hood-suppression-systems)

[Why Is A Kitchen Hood Suppression System So Important?](https://blog.koorsen.com/why-is-a-kitchen-hood-suppression-system-so-important)

[NFPA 96, Standard for Fire Protection of Commercial Cooking Operations](https://blog.koorsen.com/overview-of-nfpa-96-standard-for-ventilation-control-and-fire-protection-of-commercial-cooking-operations)

[Fire Safety Training in Restaurants: A Basic Checklist](https://blog.koorsen.com/fire-safety-training-in-restaurants-a-basic-checklist)

[![Questions! Contact Us Now!](https://no-cache.hubspot.com/cta/default/1973249/27550866-4d2c-46fb-8ec4-ef118de52673.png)](https://cta-redirect.hubspot.com/cta/redirect/1973249/27550866-4d2c-46fb-8ec4-ef118de52673)

### SEARCH OUR BLOG

This is a search field with an auto-suggest feature attached.

- There are no suggestions because the search field is empty.

### Subscribe to Our Blog

### Recent Posts

### CATEGORIES

- [Commercial Security (111)](https://blog.koorsen.com/topic/commercial-security)
- [Fire Protection (109)](https://blog.koorsen.com/topic/fire-protection)
- [Fire Extinguisher (77)](https://blog.koorsen.com/topic/fire-extinguisher)
- [Fire Alarm Systems (75)](https://blog.koorsen.com/topic/fire-alarm-systems)
- [Fire Safety & Security (73)](https://blog.koorsen.com/topic/fire-safety-security)
- [Koorsen News (73)](https://blog.koorsen.com/topic/koorsen-news)
- [Fire Sprinkler Systems (67)](https://blog.koorsen.com/topic/fire-sprinkler-systems)
- [Fire Safety (61)](https://blog.koorsen.com/topic/fire-safety)
- [Access Control Systems (45)](https://blog.koorsen.com/topic/access-control-systems)
- [Fire Suppression (43)](https://blog.koorsen.com/topic/fire-suppression)
- [Inspection/Testing (43)](https://blog.koorsen.com/topic/inspectiontesting)
- [Small Business Security (39)](https://blog.koorsen.com/topic/small-business-security)
- [Kitchen Fire Suppression (37)](https://blog.koorsen.com/topic/kitchen-fire-suppression)
- [Video Surveillance (30)](https://blog.koorsen.com/topic/video-surveillance)
- [Fire Training (24)](https://blog.koorsen.com/topic/fire-training)
- [Restaurant Industry (24)](https://blog.koorsen.com/topic/restaurant-industry)
- [Emergency/Exit Lighting (22)](https://blog.koorsen.com/topic/emergency-exit-lighting)
- [Monitoring (20)](https://blog.koorsen.com/topic/monitoring)
- [NFPA (19)](https://blog.koorsen.com/topic/nfpa)
- [Education Industry (18)](https://blog.koorsen.com/topic/education-industry)
- [Commercial Kitchen (17)](https://blog.koorsen.com/topic/commercial-kitchen)
- [Training & Education (15)](https://blog.koorsen.com/topic/training-education)
- [Fire Pumps (12)](https://blog.koorsen.com/topic/fire-pumps)
- [Healthcare Industry (12)](https://blog.koorsen.com/topic/healthcare-industry)
- [Property Management Industry (10)](https://blog.koorsen.com/topic/property-management-industry)
- [Bi-Directional Amplifier (9)](https://blog.koorsen.com/topic/bi-directional-amplifier)
- [Emergency Notification (9)](https://blog.koorsen.com/topic/emergency-notification)
- [General (9)](https://blog.koorsen.com/topic/general)
- [Nurse Call System (9)](https://blog.koorsen.com/topic/nurse-call-system)
- [Kasey Program (8)](https://blog.koorsen.com/topic/kasey-program)
- [Restaurant (8)](https://blog.koorsen.com/topic/restaurant)
- [Education (7)](https://blog.koorsen.com/topic/education)
- [Property Management (7)](https://blog.koorsen.com/topic/property-management)
- [Construction Industry (6)](https://blog.koorsen.com/topic/construction-industry)
- [Koorsen Family Foundation (6)](https://blog.koorsen.com/topic/koorsen-family-foundation)
- [Press (6)](https://blog.koorsen.com/topic/press)
- [Retail Industry (6)](https://blog.koorsen.com/topic/retail-industry)
- [Mobile Equipment (4)](https://blog.koorsen.com/topic/mobile-equipment)
- [Vehicle Fire Suppression (4)](https://blog.koorsen.com/topic/vehicle-fire-suppression)
- [Awards (3)](https://blog.koorsen.com/topic/awards)
- [Dry Chem Suppression (3)](https://blog.koorsen.com/topic/dry-chem-suppression)
- [Engineering (3)](https://blog.koorsen.com/topic/engineering)
- [Hospitality Industry (3)](https://blog.koorsen.com/topic/hospitality-industry)
- [Long Term Care (3)](https://blog.koorsen.com/topic/long-term-care)
- [Podcast (3)](https://blog.koorsen.com/topic/podcast)
- [Industrial (2)](https://blog.koorsen.com/topic/industrial)
- [Infographics (2)](https://blog.koorsen.com/topic/infographics)
- [KnoxBox (2)](https://blog.koorsen.com/topic/knoxbox)
- [Backflow Preventer (1)](https://blog.koorsen.com/topic/backflow-preventer)
- [Construction (1)](https://blog.koorsen.com/topic/construction)
- [Distributed Antenna Systems (1)](https://blog.koorsen.com/topic/distributed-antenna-systems)
- [Flame Detection (1)](https://blog.koorsen.com/topic/flame-detection)
- [Government (1)](https://blog.koorsen.com/topic/government)
- [Home Security (1)](https://blog.koorsen.com/topic/home-security)
- [The Joint Commission (1)](https://blog.koorsen.com/topic/the-joint-commission)
- [Underground Services (1)](https://blog.koorsen.com/topic/underground-services)

see all

### ALL PRODUCTS AND SERVICES

- [Fire Extinguishers](https://www.koorsen.com/products-services/fire-protection/fire-extinguishers/)
- [General Fire Products](https://www.koorsen.com/products-services/fire-protection/general-fire-products/)
- [Emergency/Exit Lighting](https://www.koorsen.com/products-services/fire-protection/emergency-exit-lighting/)
- [Fire Alarm Systems](https://www.koorsen.com/products-services/fire-protection/fire-alarm-systems/)
- [Fire Sprinkler Systems](https://www.koorsen.com/products-services/fire-protection/fire-sprinkler-systems/)
- [Kitchen Fire Suppression](https://www.koorsen.com/products-services/fire-protection/kitchen-hood-fire-suppression/)

- [Fire Suppression Systems](https://www.koorsen.com/products-services/fire-protection/fire-suppression-systems/)
- [Commercial Security](https://www.koorsen.com/products-services/security/commercial-security/)
- [Emergency Notification](https://www.koorsen.com/products-services/communications/emergency-notification/)
- [Communications](https://www.koorsen.com/products-services/communications/)
- [Home Security](https://www.koorsen.com/products-services/security/home-security/)
- [Nurse Call Systems](https://www.koorsen.com/products-services/communications/nurse-call-systems/)

### OTHER COMPANIES

- [KOORSEN ENVIRONMENTAL](https://koorsenes.com/)
- [KOORSEN FACILITIES MANAGEMENT](https://www.koorsenfm.com/)

### CONTACT KOORSEN

[866-311-7753](tel:8663117753)

[info@koorsen.com](mailto:info@koorsen.com)

- [FAQS](https://www.koorsen.com/faq/)
- [KOORSEN CAREERS](https://www.koorsen.com/about-us/careers/)
- [MEDIA RELATIONS](https://www.koorsen.com/media-relations/)
- [TRANSPARENCY IN COVERAGE](https://www.koorsen.com/transparency-in-coverage/)

<https://twitter.com/koorsenfire> <https://www.facebook.com/pages/Koorsen-Fire-Security/173081436052031> <https://www.youtube.com/channel/UCU0ncdcrEYAjDHIcGGgJ3KQ> <http://www.linkedin.com/company/koorsen-fire-and-security>

© 2026 Koorsen Fire & Security | [PRIVACY POLICY](https://www.koorsen.com/privacy-policy/)

```json
{
  "@context" : "https://schema.org",
  "@type" : "BlogPosting",
  "author" : {
    "@type" : "Person",
    "name" : "Koorsen Fire & Security",
    "url" : "https://blog.koorsen.com/author/koorsen-fire-security"
  },
  "dateModified" : "2025-07-15T15:50:33.530Z",
  "datePublished" : "2018-05-14T18:13:03.000Z",
  "headline" : "What is UL 300?",
  "image" : [ "https://blog.koorsen.com/hubfs/Blogs/Products%20and%20Services/Kitchen%20Fire%20Suppression/ThinkstockPhotos-178030228.jpg" ],
  "mainEntityOfPage" : {
    "@id" : "https://blog.koorsen.com/what-is-ul-300",
    "@type" : "WebPage"
  },
  "publisher" : {
    "@type" : "Organization",
    "logo" : {
      "@type" : "ImageObject",
      "url" : "https://blog.koorsen.com/hubfs/KoorsenFireSecurity_April2017/Images/koorsen-logo.png"
    },
    "name" : "Koorsen Fire & Security - - -"
  }
}
```

```json
{
  "@context" : "http://schema.org",
  "@type" : "Organization",
  "address" : {
    "@type" : "PostalAddress",
    "addressCountry" : "",
    "addressLocality" : "Indianapolis",
    "addressRegion" : "IN",
    "postalCode" : "46218",
    "streetAddress" : "2719 N Arlington Ave "
  },
  "alternateName" : "Koorsen",
  "description" : "Since 1946, people have trusted Koorsen to protect and secure their businesses and homes.",
  "email" : "https://www.koorsen.com/",
  "image" : "https://blog.koorsen.com/hs-fs/hubfs/KoorsenFireSecurity_April2017/Images/koorsen-logo.png?width=209&name=koorsen-logo.png",
  "logo" : "https://cdn2.hubspot.net/hubfs/1973249/KoorsenFireSecurity_April2017/Images/koorsen-logo.png",
  "mainEntityOfPage" : {
    "@id" : "https://blog.koorsen.com/what-is-ul-300",
    "@type" : "WebPage",
    "description" : "Neglecting to adhere to the UL 300 codes is deliberate endangerment of all people working in and visiting your kitchen. Learn more about UL 300 standards.   "
  },
  "naics" : "238220",
  "name" : "Koorsen Fire &amp; Security Headquarters",
  "sameAs" : [ "https://www.facebook.com/pages/Koorsen-Fire-Security/173081436052031", "https://twitter.com/koorsenfire", "http://www.linkedin.com/company/koorsen-fire-and-security", "https://www.youtube.com/channel/UCU0ncdcrEYAjDHIcGGgJ3KQ", "https://www.instagram.com/koorsenfire/?hl=en" ],
  "telephone" : "",
  "url" : "https://www.koorsen.com/"
}
```

```json
{
  "@context" : "http://schema.org",
  "@type" : "BlogPosting",
  "author" : {
    "@type" : "Person",
    "name" : "Koorsen Fire & Security"
  },
  "dateModified" : "July 15, 2025, 3:50:33 PM",
  "datePublished" : "2018-05-14 18:13:03",
  "description" : "Neglecting to adhere to the UL 300 codes is deliberate endangerment of all people working in and visiting your kitchen. Learn more about UL 300 standards.   ",
  "headline" : "What is UL 300?",
  "image" : {
    "@type" : "ImageObject",
    "url" : "https://cdn2.hubspot.net/hubfs/1973249/Blogs/Products%20and%20Services/Kitchen%20Fire%20Suppression/ThinkstockPhotos-178030228.jpg"
  },
  "mainEntityOfPage" : {
    "@id" : "https://blog.koorsen.com/what-is-ul-300",
    "@type" : "WebPage"
  },
  "publisher" : {
    "@type" : "Organization",
    "logo" : {
      "@type" : "ImageObject",
      "url" : "https://cdn2.hubspot.net/hubfs/1973249/KoorsenFireSecurity_April2017/Images/koorsen-logo.png"
    },
    "name" : "Koorsen Fire &amp; Security Headquarters"
  }
}
```