What is UL 1628?

UL 1628 is a professional technical standard that sets forth requirements and test methods for evaluating the performance of fire doors. It is an internationally recognized standard developed by Underwriters Laboratories (UL), a global safety consulting and certification company.

Understanding the Purpose

The main purpose of UL 1628 is to ensure that fire doors meet certain criteria in order to provide adequate protection in case of fire. This standard establishes guidelines for testing various aspects of fire doors, such as their structural integrity, insulation properties, and resistance to heat and flame.

Testing Procedures

UL 1628 specifies specific testing procedures that must be conducted to assess whether a fire door complies with the set requirements. These tests typically involve subjecting the door to extreme temperatures to determine its ability to withstand the heat and prevent the spread of fire. The tests also evaluate the door's ability to maintain its structural integrity and prevent the passage of smoke.

Compliance and Certification

Fire doors that meet the requirements outlined in UL 1628 can receive UL certification. This certification indicates that the fire door has undergone rigorous testing and evaluation to verify its performance. It provides assurance to building owners, architects, and regulatory authorities that the fire door meets the necessary safety standards for use in commercial and residential buildings.