AHJ Email Preapproval Form

Use this convenient form to send your proposed firestopping system specs to your AHJ- (Authority Having Jurisdiction)- for preapproval. Your System is approved when the Inspector says it is! Note that you will use one AHJ form for each UNIQUE firestop product you specify.


AHJ Request Forms for Pre Approval of Your Firestopping System

AHJ Email Request Form

Having a guaranteed method of AHJ approval (Authority Having Jurisdiction) for your firestop system is mandatory in today’s world. Long gone are the days when a cable installer could use a claw hammer to break through a firewall, stick a bunch of wires through the hole, and walk away. Forgiveness is NOT better than permission. To get your firestopping method approved by the AHJ, you will need a simple but effective way to approach the AHJ. The AHJ needs to protect their organization from liability and at UNIQUE Fire Stop Products, we have developed an easy and effective way to do that.

Click for the newest version of our AHJ form, the AHJ Email Request Form, which allows you to send all the required information to the Authority Having Jurisdiction by email. The AHJ will also receive instructions for emailing back to you his/her approval or disapproval and the reasons why. All the instructions for use are right on the form. And all the information you will need is right on the UNIQUE Fire Stop Product pages.

This new form has been a big timesaver for installers all over the country. And each of our UNIQUE Fire Stop Factory Installers or UNIQUE Certified Contractors receive training in how to use it when they take our Free Online Certification Training. Become certified today and take part in the many benefits we offer free to our certified installers and contractors.

See this article about how to satisfy the Authority Having Jurisdiction (AHJ) — that is, the local, State or Federal official designated and responsible for approving firestopping systems equipment, installation and procedures.

The Original AHJ Request Form

This simple form can be filled out manually and submitted to the Inspector so he/she may pre approve your proposed System. Download the original AHJ Request Form (PDF).

Regardless of which form you choose to use, remember this:

Your System is approved when the Inspector says it is!


BICSI CEC Authorization Letter

See the BICSI letter below which authorizes Unique Fire Stop Products to issue 2 BICSI CECs (Continuing Education Credits) for successful completion of our Factory Certification Training.

BICSI Course Approval Letter


BICSI Application for Recognition of Continuing Education Credits (CECs)

Be sure to use the most current Application form when submitting a course to BICSI, and you can do that by going to the following link:

Applying for BICSI® Recognition of Continuing Education Credits (CECs)




How to Calculate Percent Fill of Your Fire Stop Sleeve

load formula

UL Certifications for UNIQUE Fire Stop Products

Click the link below to see the UL Certifications for our UNIQUE Fire Stop products:


UL Certifications for UNIQUE Fire Stop Products


UL 1479 Standard for Fire Tests of Through-Penetration Firestops

All UNIQUE Fire Stop Systems sold on this website have been tested according to UL 1479 Standards. See our UL Systems page for a closer look at the UL documents and ratings for each of our firestop products, the explanation of each of those ratings, and how to choose the correct UNIQUE Fire Stop product for the job.

What Are UL 1479 Standards?

UL standards require successful testing of all approved through-penetration firestops designed for use in breaches in firewalls or floor-ceiling assemblies, or both. The UL 1479 tests required by Underwriters Laboratories determine the ability of a firestop system to stop the spread of fire, smoke, and water through a fire-rated barrier in the event of a fire and for how long a period of time. Building codes require the use of firestop systems tested and approved under the UL 1479 standard, Fire Tests of Through-Penetration Firestops. Alternately, firestop products may be tested in other laboratories using almost identical standards labeled ASTM E814,  Standard Test Method for Fire Tests of Penetration Firestop Systems.

According to the book, Standard for Fire Tests of Penetration Firestops, available for sale at the UL Standards Sale Site, the scope of UL 1479 testing is as follows:

Scope of UL 1479 Testing

1.1 These requirements cover through-penetration firestops of various materials and construction that are intended for use in openings in fire-resistant wall, floor or floor-ceiling assemblies, and membrane-type penetration firestops of various materials and construction that are intended for use in openings in fire-resistive wall assemblies.

1.2 The method of testing penetration firestops as specified by these requirements consists of exposure of test samples to a fire of standard time and temperature and to an application of a hose stream. Ratings are then established on the basis of:

a) The length of time the firestop resists fire before the first development of through-openings or flaming on the unexposed surface;

b) Acceptable limitation of thermal transmission; and

c) Acceptable performance under the application of the hose stream.

1.3 The method of testing also includes optional air leakage tests to determine the rate of air leakage through penetration firestop systems resulting from a specified air pressure difference applied across the surface of the systems.

1.4 The method of testing also includes optional water leakage tests to determine the ability of penetration firestop systems to resist the passage of water under a three foot pressure head. This method does not evaluate the ability of uncured firestop systems to resist such exposure.

1.5 Two ratings are established for each penetration firestop system: an F rating based upon flame occurrence on the unexposed side of the test sample and acceptable hose stream performance; and a T rating based on temperature rise and flame occurrence on the unexposed side of the test sample and acceptable hose stream performance.

1.6 An L rating may also be established for a penetration firestop system. The L rating is based on the amount of air leakage through the test sample.

1.7 A W rating may also be established for a penetration firestop system. The W rating is based on the water resistance of the test sample.

1.8 The method of testing penetration firestop systems containing piping systems for vented (drain, waste or vent) systems and closed (process or supply) systems is differentiated by the capping or non-capping of the piping systems on the unexposed side of the test assembly as described in

1.9 Tests conducted in accordance with these requirements are intended to demonstrate the performance of penetration firestops during exposure to fire, but are not intended to determine acceptability of firestops for use after exposure to fire. These requirements do not cover the ampacity of conductors encased in penetration firestop materials.

1.10 The results obtained from the air leakage tests are expressed in ft3/min (m3/s) per ft2 (m2) of opening. The results are intended to develop data to assist authorities having jurisdiction, and others, in determining the acceptability of penetration firestops with reference to the control of air movement through the assembly.

1.11 These requirements do not cover outlet boxes and fittings for use in and evaluated for fire resistance as part of a fire-resistance-rated floor, floor-ceiling or wall assembly.

BICSI Outside Vendor Courses: CEC Search

Use this link to explore outside vendor courses available through BICSI. All offer Continuing Education Credits (CECs):

BICSI Outside Vendor Courses