What does SWB stand for?

OSB Panels: Oriented strand board, universally known as OSB, is an engineered-wood structural panel that has replaced plywood in many homebuilding applications, including subfloors, and roof and wall sheathing. The standard OSB panel is 4 feet wide by 8 feet long. Panels measuring 4 by 9 feet and 4 by 10 feet are also readily available. OSB is available thicknesses ranging from ¼- to 1-1/8-inches thick. Standard OSB (PS-2 grade) is considered "moisture resistant." In regions that receive more than an occasional rain shower, choose an OSB product designated as "weather and rain resistant." For the best protection against moisture, choose premium OSB rated for "wet environments."

Marinite board insulation is a fire resistant, thermal, structural refractory insulation. It is a non-asbestos incombustible material formed from calcium silicate. Marinite board insulation is used in fire safety applications such as fire stops, fire walls, cable trays and fire doors.