AUTOMATIC LINEAR COLLECTORS EUREKA (1) MODEL II, (2) MODEL III, (3) MODEL IV CONTINUOUS SID; LINEAR MANUAL COLLECTORS EUREKA (EUREKA LINEAR MANUAL COLLIMATORS): (4) MODEL MC150, (5) MODEL MC150-C (1) 70-4300X, (2) 70-53XXX, (3) 70-750XX, (4) 70- 630XX, (5) 70-631XX; WE. OF SERIES: (FROM 1 TO 5) FROM FT92178 TO FT92232, FROM FW68001 TO FW68174; UNITS MANUFACTURED IN SEPTEMBER AND OCTOBER 1999