Builders Hardware and Hollow Metal is a premium manufacturer of custom door frames and internal window openings. Founded in 1983, we have grown to over 600 customers (mainly commercial construction contractors) with a fast and flexible in-house manufacturing capability specializing in hollow metal. With a 43,000 square foot facility in the Milwaukee area, we also stock hundreds of Section 8 and Section 10 items for rapid fulfillment of our customers' demands.