6v 25w Dual Contact Base Emergency Light Bulb, Elb-0267, Most Popular and Affordable Model, Constructed in Quartz Glass, Brilliantly Designed Luminary 25-watt dual contact base emergency light bulb is our highest output DCB in the 6-volt category uses a G6 double contact bayonet base to secure into many of our most popular emergency lighting products. last up to 250 hours so you will only have to change globes in your luminary a few times during their 8-10 year lifespan produces a whopping 450 lumens (36 MSCP) one of the brightest 6-volt globes