For technical information on Douglas Fir see this page, or the Fir species page for more general info. Bear Creek Lumber can provide you with a variety of post and beam material in any size needed. All Beams are available, in any size, F.O.H.C. (Free of Heart Center), Select Structural, #1 & Better, #2 & Better . All beams are available in lengths up to 40 feet - although most lengths over 20 feet are special order items. Beams can be ordered rough-cut or surfaced. To get a quote on any of these products go to our Request for a Quote Page