S14 11 watt bulbs are for use with our heavy duty lights strings or any other medium base (E26) light socket. These bulbs are 130 volt and measure 3 1/2″ tall and 1 3/4″ wide. Our S14 commercial grade bulbs have a 6,000 hour bulb life that provides long term illumination for indoor and outdoor use. Looks Great on Restaurant and Home Patio’s. Sold in Packs of 20 Bulbs.