ALPHA PRO TECH, LTD. (Alpha Pro Tech) is engaged in developing, manufacturing and marketing a line of disposable protective apparel and infection control products for the cleanroom, industrial, pharmaceutical, medical and dental markets through its wholly owned subsidiary, Alpha Pro Tech, Inc. It also manufactures a line of building supply construction weatherization products through its wholly owned subsidiary, Alpha ProTech Engineered Products, Inc. Its products are sold under the 'Alpha Pro Tech' brand name, as well as under private label. Its products are grouped into three segments. The Building Supply segment consists of construction weatherization products, such as housewrap and synthetic roof underlayment as well as other woven material. The Disposable Protective Apparel segment consists of a line of shoecovers, bouffant caps, coveralls, gowns, frocks and lab coats. The Infection Control segment consists of a line of face masks and eye shields.