space saving steel spiral staircase space saving steel spiral staircase
space saving steel spiral staircase space saving steel spiral staircase

72" Diameter | All-Welded Steel | Horizontal Line Rail Design

The Model 72 FAS Spiral Staircase offers a bold, contemporary aesthetic with robust, all-welded construction. Designed in collaboration with Costa Custom Homes, this custom spiral stair is an architectural focal point—perfect for luxury homes and modern interiors where form and function must coexist.

Key Features:

  • 72" Diameter Steel Spiral Stair – A spacious layout ideal for high-ceiling residential or commercial applications.
  • Custom Plate Steps & Risers – Clean-cut steel plate steps with no bends for a sleek, industrial look.
  • Horizontal Line Rail System – Rail runs in a flat, horizontal plane while following the handrail slope, creating striking linear geometry.
  • Angle Iron Handrail, Bottom Rail, & Posts – Precision-crafted for strength, structure, and architectural presence.
  • Flat Bar Intermediate Rails – Bent the hard way for structural integrity and custom appeal.
  • Freestanding Design to 13' Height – Built around a 6" steel center column; no lateral bracing required.

Engineered for Custom Expression

Built using our fully welded steel spiral stair system, the Model 72 FAS is more than just a staircase—it’s a statement. With zero-bend custom plate treads, visually balanced line rails, and a structurally independent design, this stair integrates seamlessly into modern environments where aesthetics and durability are equally important.

Customization Options Include:

  • Rail and tread finish choices (primed, painted, powder-coated)
  • Custom landing shapes and orientations
  • Matching railing systems for upper balconies or mezzanines

Why Choose the Model 72 FAS Spiral Staircase?

  • Bold, contemporary design with industrial elegance
  • Fully welded for strength, durability, and long-term performance
  • No lateral bracing needed—freestanding up to 13 feet
  • Endless custom possibilities for residential and architectural use
  • Designed in collaboration with builders, homeowners, and architects

From its geometric lines to its engineered strength, the Model 72 FAS is built to impress and designed to last. Bring your vision to life with a staircase that transforms space and elevates your entire build.