UL certifies materials, systems and assemblies used for structural fire resistance and separation of adjacent spaces to safeguard against the spread of fire and smoke within a building and the spread of fire to or from the building.

Fire-resistance and smoke protection


UL Product Spec

This powerful online search tool can help you easily locate the UL certification information needed to achieve safe, sustainable code complaint installations. This next generation search engine covers a wide range of construction materials, equipment and fire-resistance rated assemblies and systems. It includes the flexibility to search by product name, master format number, related installation code section, keywords and other terms. Learn more.


Smoke protection products

Many products designed to maintain the integrity of the openings in fire-resistance-rated systems have been evaluated to determine the air leakage ratings of penetrations and other openings. These include, but are not limited to:


Technical topics

Door, Window and Related Hardware Application Guide Learn more.