Mylen's 42in diameter Condor spiral stairs create space and flexibility for your home design. With a small footprint and Mylen's safety standards, the benefits of a spiral staircase are endless. The Condor collection is offered in powder coated white, gray or black colors with matching aluminum handrails and personalization options to meet your technical and design needs. All staircase kits include everything you need to complete your installation in one box (except tools) and typically can be installed in 1 day. All kits include one platform rail standard for corner mount installations or a second platform rail option for loft mount installations. American made for American specifications, backed with a lifetime warranty on all metal components, 5 years on any finished components and American customer support, you can easily find an option to meet your vision. Mylen's 42in diameter spiral staircases have 17in of clear walking path. Please review technical data sheet for additional information on measurements. This spiral staircase does not meet minimum 2015 IRC requirements. 42in diameter spiral stair case with 17in of clear walking path per tread Fits floor to floor heights 136in - 152in with 15 treads and 8.5in to 9.5in between treads Includes 1 36in tall platform rail for corner-mount installations Smooth steel treads Suitable for interior applications only Powder coated aluminum handrail Reversible rotation (left hand up or right hand up) For installations through the floor, a 44in x 44in minimum well opening is required Check with local building code authorities for your local building code specifications