Mesker Door | Steel Door & Steel Frame UL Certifications

UNDERWRITERS LABEL

All Mesker UL label hollow metal doors and hollow metal frames are manufactured in strict accordance with the specifications and procedures of Underwriters Laboratories Inc. Adherence to these specifications and procedures is checked by UL through their in-plant inspection service. Our Mesker UL hollow metal doors and hollow metal frames meet every requirement of fire protection. Hollow metal doors are available in 1-3/4 inch thickness for A, B, C, D and E classifications.

FACTORY MUTUAL

All Mesker FM label hollow metal doors and hollow metal frames meet all rigid Factory Mutual regulations for testing quality and design. Providing up-to-date engineering data, and a network of Factory Mutual field inspectors to maintain service and provide maximum protection.

WARNOCK HERSEY / INTERTEK

Mesker Door is listed with WHI to cover virtually all of your national labeling requirements. Warnock Hersey/Intertek monitors and enforces adherence to their procedures by periodic in-plant inspections.