Crompton Colourglazed Sign 15W B22d E14 Decorative Light Bulb Incandescent Lamp B22 (BAYONET) - SES (Screw Together) 15W Colourglazed sign decorative lamp. The coating is applied internally and provides a strong, vibrant colour which will not wear away of fade, which combined with the rough service vacuum construction to resist vibration, makes them ideal for outdoor applications where dirt and dust is encountered. Colourglazed lamps provide strong vibrant colours as an alternative to the sparkling appearance of the Harlequin lamp. Special Purpose: Decorative lamp, not suitable for household room illumination. Colourglazed lamps provide strong vibrant colours as an alternative to the sparkling appearance of the Harlequin lamp. 1,000 hour life 4,000 switching cycles BC-B22d.