20w White Fluorescent - Black Light Bulb - F20T9/BL - Description: 20w White Fluorescent - Black Light Bulb - F20T9/BL - Wattage 20 - Base G13 - Shape T9 - Overall Length (mm) 594 - Kelvin UVA - Color WHITE 20w White Fluorescent - Black Light Bulb - F20T9/BL