International Beams Inc.'s I-joists offer advantages over conventional lumber products. This superiority results in savings for the builder and long-term performance benefits for the homeowner. I-joists are installed in place of conventional 2x10 and 2x12 joists using traditional framing tools and fasteners. With long lengths, I-joists are used in multiple span applications, thus reducing cutting, overlapping and material waste at the job site. Also, since our I-joists span longer distances than traditional framing lumber, the joist spacing can be wider, resulting in fewer pieces to handle and install. The wide flanges used in all our series provide a larger gluing and nailing surface for floor and roof sheathing. These lightweight joists will not twist, warp, or shrink and are more uniform in their dimensions than solid lumber. Our joists are available in depths from 9 1/2" to 20" and lengths up to 48 feet. International Beams Inc.'s I-joists are recognized as an innovative solution to the building industry's floor and roof framing needs.