Made in the USA Since 1895.
This Duvinage Chicago steel spiral stair kit in 5’–0” diameter with a hot-dip galvanized finish features diamond plate steel treads and platform, balusters with code spacing, a full-length center pole, and an aluminum handrail. The galvanized steel components start with a shiny metallic appearance that develops a matte gray patina over the span of about 12 months for a maintenance-free exterior solution.