Derrick's 48×30 screens are commonly called FLC-2000 shaker screens, they fit all Derrick FLC 2000 3-panel and 4-panel shale shakers. They are available in Pyramid(PMD), Pyramid Plus(PMD+) and PWP panels. Fast, easy and reliable panel tensioning is provided by two pairs of Rapid-change draw bolts on each side of each screen panel