A new line of high-temperature liquid filter bags extends the upper temperature range of MAX-LOAD™ bag filters up to 400ºF. The bags are designed to fit bag filter housings from other manufacturers as well. The bags are constructed of a proprietary polyester blend that is impervious to high-temperature fluids, and also acts as an effective filter medium. According to the manufacturer, filter bags made of this specially constructed material capture more particles at a lower cost per gram of debris removed than comparable high-temperature filter bags or cartridges.