Simpson Lumber Company, LLC
Simpson Lumber Company, LLC operates facilities in Washington state, where it produces Douglas Fir and Hemlock dimension lumber used in home construction. At Simpson, we use every part of the tree except its shadow. By products of Simpson Lumber's manufacturing operations such as chips, bark, sawdust and shavings are sold to make paper, other construction products, or landscape materials.
Material Safety Data Sheets (MSDS) – Wood Dust
Simpson Door Company
Simpson Door Company manufactures some of the world's most beautiful stile and rail wood-panel doors in a wide variety of door designs compatible with nearly every architectural style and price category. See Simpson Door Company's website for a virtual catalog.