The over states floor to floor height of between 87-3/8 inches and 108-11/16“, but the item states 11,5 ft and also 135” in the specifications. What is the actual max height these steps can be utilized for?

Hello, thanks so much for reaching out. For the Rome 14 Tread Kit, the floor-to-floor height range is from 109 1/4" - 135 3/4". If you're looking for a smaller height range, you can look at the 11,12, or 13 tread kit. For further questions, please reach out to us at info@dolleusa.com. Thank you.