Twin metal stringers are accessorized with 4" solid treads creating a beautiful open and airy visual effect. The parallel lines created by the stringers, the floating rectangles/treads and the combination of contrasting tones, form a harmonious final staircase design which complements the architect's original vision. This is a perfect example of how a well designed and built staircase transforms a residential entry into a great space/focal point. CSC 1976-2020 © Century Stair Company. ® All Rights Reserved.