Amazon
High-performance lamps Arrangement of filament segments matched to ETC's "Source Four" spotlight family Optimum use of the generated light Same useful luminous flux for which 1,000 W lamps had previously been required EEI - Energy Label: C
High-performance lamps Arrangement of filament segments matched to ETC's "Source Four" spotlight family Optimum use of the generated light Same useful luminous flux for which 1,000 W lamps had previously been required EEI - Energy Label: C