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Product Quality and Durability

Modern lumber manufacturing and drying provides products with consistent characteristics. Engineered
wood products provide additional strength and predictability benefi ts and include:

• Machine-stress rated (MSR) and fi ngerjoined lumber
• Metal plate-connected trusses
• Glued-laminated products (glulam)
• Laminated veneer lumber (LVL), parallel strand lumber (PSL) and laminated strand lumber (LSL)
• Wood I-joists and open-web wood joists
• Oriented strandboard (OSB) and plywood sheathing panels

There are many examples of wood buildings that have lasted hundreds of years, and modern wood-frame construction is better equipped than ever to last at least as long as a building is still meeting the user’s needs. Design features that employ good moisture management principles and maintenance are necessary to ensure long-term service for any type of building, and when applied to wood-frame construction, will ensure long service life.