Featuring fully stacked riser sleeves, Mylen’s builder spiral is the perfect spiral stair kit for most every situation. The spiral kit comes standard with our exclusive 1 ½” diameter steel handrail and 1” square steel balusters. As with all of our spirals, the stair can be customized to your taste with the addition of wood treads, wood handrails, and custom powder coat color finishes. This stair is durable and features the classic front-to-back baluster design along with the added strength inherent in the stacked riser sleeve design. Additional variations include galvanized and powder coated aluminum designs for outdoor use. Offered in diameters up to eight feet, our adjustable spiral stair kit can be shipped in configurations that meet building codes. Please contact us today, 1-800-431-2155 or contact us via email, ask to speak to one of our stair designers to discuss your application.