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SEPTEMBER JLC 1997 00 Products JLC' s Products by Leland Stone Standard Graded Glulams Built-up solid-sawn headers can carry heavy loads, but they twist and shrink as they dry. To avoid problems, builders sometimes substitute LVL for solid stock. Glue-laminated beams are another option, but until recently, builders had to consult an engineer to use them. Earlier this year, the West Coast Lumber Inspection Bureau certified RMT (Rosboro's Manufactured Timber) as interchangeable with the same grade of solid stock. According to the manufacturer, RMT, which is made by gluing together strips of wood that have been dried to 15% moisture content, is stronger and more stable than comparable pieces of timber. RMT is available for use as posts or beams,