The 18 LED tower bulb provides light in all directions and is suitable to light up wall lights, ceiling lights and large fittings found in American RVs.
The bulb is available in:
Ba15s- 15mm bayonet with a single contact on the base of the cap
Ba15d- 15mm bayonet with a double contact on the base of the cap
E14- Small Edison Screw 14mm cap.