Through our network of 26,000 people in 1,000 laboratories and offices in 100 countries, Intertek provides quality and safety solutions to a wide range of industries around the world. Learn more...
A career with Intertek offers rewarding opportunities to help companies around the world develop products that are used safely by millions of people every day. Learn more...
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WH Mark Product Directory
Product Recalls
WH Mark Fact Sheet (198 kb PDF)
Certification Marks Branding Guidelines (4 mb PDF)
Intertek’s Warnock Hersey (WH) Mark has long been the building product industry’s preferred certification mark. The WH Mark can be found on more than 6,500 products ranging from fire doors and builders’ hardware to hearth, plumbing and construction products. Having Intertek’s WH Mark on your product reflects your 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 WH Mark
We test your products to applicable ANSI, ASTM, CCMC, CSA, EPA, ICBO, UL, and ULC standards.
Accreditations
Intertek is recognized by the world's leading code bodies; as a Nationally Recognized Testing Laboratory (NRTL) by OSHA; recognized by Standards Council of Canada (SCC); and A2LA, APLAC, and ILAC accredited for Asia and other parts of the world. Our additional accreditations include those by the Standards Council of Canada (SCC), the National Evaluation Service (NES), the American National Standards Institute (ANSI) and the International Code Council - Evaluation Service (ICC-ES).
Please note, the WH mark is a certification mark issued by Intertek. The WH mark demonstrates product compliance to safety and/or performance standards. Intertek does not manufacture products of any kind.
Request more information to see how Intertek can help your organization with Warnock Hersey (WH) Mark.
