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We're sorry but the English section is currently under construction.
Available in North America for 25 years, solid-web I-joists have proven effective and economical in all types of construction. Boise joists offer maximum on-site adjustability. They can be drilled to accommodate wiring, pipes and ducts ACCORDING TO THE MANUFACTURER’S RECOMMENDATIONS.
This product is available in standard heights of 9-1/2", 11-7/8", 14" and 16" (other heights also available) and in different lengths.