Pack of 50 charts for Blood Bank Refrigerators. Charts are 7 day, 0C to 14C range, pressure sensitive paper. Fits applicable Blood Bank units NSBR231WSGCR/0, NSBR231WSG/0, NSBR231WSWCR/0, NSBR231WSW/0, NSBR492WSGCR/0, NSBR492WSG/0, NSBR492WSWCR/0, NSBR492WSW/0.