71" Diameter Spiral Staircases

71-inch spiral staircases are the largest diameter in our quick ship spiral staircatalog, offering the most spacious and comfortable tread depth available in a kit. A 71" spiral stair requires a 73" x 73" minimum ceiling opening and is IRC compliant, making it suitable for primary staircase use where local code permits. The extra diameter delivers a more relaxed climbing experience and is well suited to homes where the spiral staircase is a design centerpiece as well as a functional element.

The Denver Spiral Stair Kit is the only line in our catalog offered at 71" diameter. Featuring solid beech wood treads with Finger Joint technology and a powder-coated steel structure, the Denver 71" combines warmth, durability, and the most generous tread depth available in a kit configuration. Always verify spiral stair installations with your local code enforcement officer before purchase. Browse the available 71" configuration below, or see our complete spiral staircase buyer's guide for help selecting the right diameter for your space.