Warnock Hersey Mark

The Warnock Hersey (WH-ETL) Mark is North America’s leading product safety and performance mark for building and construction products.

The Warnock Hersey Mark can be found on more than 6,500 products ranging from fire doors, hardware, hearth, plumbing, and construction products. Utilizing the Warnock Hersey Mark on a product reflects a commitment to product safety, performance, and quality to inspectors, builders and end users. The WH mark additionally signifies that the product’s manufacturing site(s) undergo periodic follow-up inspections to ensure ongoing compliance of the originally certified product.

Products bearing the Warnock Hersey Mark indicate compliance to relevant building codes, association criteria, and product safety and performance standards. Nearly 80% of North America's wood fire-rated doors bear the WH Mark.

Both the Warnock Hersey Mark and the ETL Mark mark are well recognized by Authorities Having Jurisdiction (AHJs) across North America and building and code officials around the world.

The Warnock Hersey Mark can be found on more than 6,500 products ranging from fire doors, hardware, hearth, plumbing, and construction products. Utilizing the Warnock Hersey Mark on a product reflects a commitment to product safety, performance, and quality to inspectors, builders and end users. The mark also signifies that the product’s manufacturing site(s) undergo periodic follow-up inspections to ensure ongoing compliance of the originally certified product.

Our testing and certification services include:

Testing Standards for the Warnock Hersey Mark
We test your products to applicable standards including ANSI, UL, ASTM, CCMC, CSA, EPA, ICBO, and ULC.

Accreditations
Intertek is an OSHA (Occupational Safety & Health Administration) recognized NRTL (Nationally Recognized Testing Laboratory) in the U.S. and accredited as a Testing Organization and Certification Body by the Standards Council of Canada. We are also accredited by the International Accreditation Service (IAS), an International Code Council company.

 

Need help or have a question?

+1 800 967 5352
UK/EIRE:
+44 116 296 1620
S. AMER:
+55 11 2842 0444
APAC:
+86 400 886 9926
Benelux:
+31 88 126 8888
Germany
+49 711 27311 152
UAE
+971 4 317 8777
India
+91 11 4159 5408