Osram dst cl a 20 w827 e27 4008321954701 the osram duluxstar classic a has a low energy consumption of 20w providing a fast return on investment and an average life of up to 6000 hours areas of application include general and domestic applications and wherever compact and efficient lamps are needed dimensions and weight for the product are as follows maximum diameter 760 mm overall length 1520 mm product weight 11000 g