We are an association of the leading manufacturers of windows made from either solid or formed sections of steel, and such related products as casings, trim, mechanical operators, screens, and moldings when manufactured and sold by members of the industry for use in conjunction with windows. SWI provides the public with general and technical information concerning the industry's products. Users of windows and related accessories in all industries benefit from the continual advances made by SWI member companies in the design, manufacture, and application of these products at the lowest possible cost.

This web site provides a comprehensive guide for the selection and specification of many varieties of steel windows, whether fixed, ventilated, hot rolled, cold formed, or fire rated. The guide also covers several types of entrance and interior doors and custom formed steel elements. Proprietary specifications produced by each member are available from individual members upon request.

Generations of architects have selected steel windows for use in virtually every conceivable setting, in traditional structures, and the most contemporary buildings. Architects worldwide have relied on the unique, timeless qualities found only in steel windows to create buildings which can evoke classic, old-world themes or bold, challenging statements that propel us into the future.