Tampa, Fla.-based McNichols specializes in lightweight perforated metal panels that are suitable for many architectural applications, including brisesoleils, sliding doors, and fencing. Liking its low cost and versatility, Paulus used the company's expanded metal as guardrail infill material for the staircase of his Ice House Lofts project (above). Multiple product styles and materials are available. McNichols Co., 813.282.3828; www.mcnichols.com.