DUKE : large-diameter steel interior spiral staircase

Large-diameter steel spiral stair for generous spaces

The Duke staircase is intended for interiors with substantial volume: lofts, large living rooms, open offices or public areas. Whereas a compact spiral stair focuses primarily on saving space, Duke embraces larger dimensions and a clear architectural role. It draws a strong spiral line through the room and organises circulation between levels, while fully expressing its industrial steel character.

All-steel interior staircase for residential and project use

As an all-steel interior spiral staircase, Duke suits both private homes and professional environments such as offices, shops or restaurants. The open treads and solid structure create an industrial staircase that is easy to maintain and visually fits raw, contemporary spaces. Custom-designed and installed by Spira, it aligns precisely with the opening, floor levels and overall layout of the building.

Price for a standard straight staircase for one storey, including the handrail and beechwood treads, excluding installation