The BILCO Company is a world leader in the design and manufacturer of specialty access products for both residential and comm ... ercial construction. BILCO, a wholly owned subsidiary of AmesburyTruth which is a division of Tyman PLC, has been a pioneer in the development of the unique line of specialty access products found within this catalog. The Company is a pioneer in the development of a unique line of products that includes roof hatches, floor access doors, automatic fire vents, natural ventilators, BILCO basement doors, and emergency egress window wells. Our newest addition to the BILCO line is the Barracuda(TM) Intruder Defense System for commercial doors. The BILCO Company has served the building industry since 1926. During these years it has built a reputation among architects, engineers, and the construction trades for dependability and for products that are unequaled in design and workmanship. The Company is an ISO 9001 certified and utilizes LEAN manufacturing throughout the organization. read more