This cassette offers 1676 square openings (0.38 mm) allowing for a greatly improved fluid exchange and drainage without having to use biopsy pads. Large anterior slots in both cassette and cover ensure that the Micromesh(TM) biopsy cassette will sink rapidly. A large square compartment measuring 27 mm is perfect even for needle biopsies. The cover does not protrude above the cassette, a great space saving feature allowing more cassettes to be stacked in automatic labeling machines and tissue processors.