Manufacturer Approved for Exterior Walls Systems Standard

摘要

Kalwall Corp., known for its translucent wall, roof and window systems, is among the first manufacturers meeting the latest Approval Standard 4881, Class 1 Exterior Walls Systems. FM Approvals, a nationally recognized testing and certification arm of FM Global Group, spent two years developing the new standard to address the natural hazards to which exterior walls are commonly exposed, including high-wind events. In order to maintain FM standard approval, KalwalPs wall assemblies first had to meet the requirements for Class 1 Fire Rating as called for in Approval Standard 4880. Additional requirements of the new Approval Standard 4881 are wind-load rating, windborne-debris resistance and hail-resistance ratings.