Warnock Hersey Fire Doors Asbestos

Utilizing the warnock hersey mark on a product reflects a commitment to product safety performance and quality to inspectors builders and end users.

Warnock hersey fire doors asbestos.

Intertek is a company that ensures products meet safety health environmental and quality standards for almost any product. Fire doors rails are approximately 5 8 on top and 1 3 4 on bottom. May be labeled and classified by warnock hersey international or underwriters laboratories as 45 60 90 minute rating. These doors are labeled and classified by warnock hersey international inc as fire barriers in sizes up to and including 4 0 x 8 0.

Contains chrysotile or soft white asbestos. The warnock hersey mark can be found on more than 6 500 products ranging from fire doors hardware hearth plumbing and construction products. This mark is widely recognized throughout the industry appearing on fire doors and frames found in north america and beyond. There are two asbestos fiber classifications.

Contains hard spiky crystals along with a range of colors like brown blue and green. Asbestos is a group of naturally occurring non combustible silicate minerals composed of glass like fibers. I seem to remember the old super six going from asbestos to fibre cement in the mid 70 s not much knowledge on fire doors though mmmmmm just googled super six up and it stopped asbestos in 1985 but i m pretty sure i never used it in the late 70 s.