2023 Washington Code > Chapter 18.160 – Fire sprinkler system contractors

2022 Washington Code > Chapter 18.160 – Fire sprinkler system contractors

2020 Washington Code > Chapter 18.160 – Fire sprinkler system contractors

2019 Washington Code > Chapter 18.160 – Fire sprinkler system contractors

2018 Washington Code > Chapter 18.160 – Fire sprinkler system contractors

2016 Washington Code > Chapter 18.160 – Fire sprinkler system contractors

2015 Washington Code > Chapter 18.160 – Fire sprinkler system contractors

2014 Washington Code > Chapter 18.160 – Fire sprinkler system contractors

2013 Washington Code > Chapter 18.160 – Fire sprinkler system contractors