The BILCO Company manufactures a complete line of roof hatches, automatic smoke vents, and roof hatch fall protection products. The BILCO Company is now a part of Quanex. Quanex (NYSE: NX), a global, publicly traded manufacturing company serving OEMs in the fenestration, hardware, cabinetry, solar, refrigeration, security, construction, and outdoor products markets. We are A Part of Something Bigger(SM).