eXtensible markup language. XML is a file extension for an Extensible Markup Language (XML) file format used to create common information formats and share both the format and the data on the World Wide Web, intranets, and elsewhere using standard ASCII text. XML is similar to HTML.
The stair treads can also be ordered with a matching 3' x 5' or other size landing mat. For stair treads ranging anywhere from 24 inches wide to 36 inches wideor other custom sizes, turn to Dean Flooring Company.
Stair Step Treads. 1  Step tread depth uniformity (<= 3/8 variation) 2  Stair tread depth for winder stairs (>= 6 at smallest point) 3  Stair tread uniformity for winder stairs at the 12 walk-line (<= 3/8 variation) 4  Stair tread slope (out of level on walking surface) - (slope or rise must be <= 1 in 48) -- Source: IRC.