The Norman Lamps 150ARS/CL is a 150W A21 incandescent light bulb built for applications that demand both high light output and durable, long-lasting performance. Operating at 130V with a standard E26 medium screw base, this incandescent bulb fits the vast majority of North American lamp sockets and fixtures without adapters. The clear glass envelope delivers brilliant, unfiltered light with a warm color temperature of approximately 2700K and a perfect color rendering index of 100, making colors appear natural and true in any setting.

Engineered as a rough service incandescent bulb, the 150ARS/CL is constructed to withstand mechanical stress, vibration, and demanding environments where standard general-service bulbs may fail prematurely. Despite its heavy-duty design, it maintains full dimmability with standard dimmer switches, offering flexible light level control. The bulb measures 5.40 inches in overall length and 2.62 inches in diameter, conforming to the A21 lamp shape profile.

With a rated average life of 8,000 hours, this incandescent bulb delivers significantly extended service compared to standard-life alternatives at the same wattage, reducing replacement frequency in hard-to-reach or high-use fixtures. Suitable for floor lamps, table lamps, ceiling fixtures, industrial work lights, and other applications requiring maximum output from a medium-base socket, the 150ARS/CL is sold individually and provides instant full brightness from the moment it is switched on.

• 150W A21 incandescent bulb, 130V, E26 medium screw base — compatible with standard North American fixtures
• Rough service construction withstands vibration and mechanical stress for reliable performance in demanding environments
• Clear glass envelope delivers warm, natural light at approximately 2700K with a perfect CRI of 100 for true color rendering
• Rated 8,000 average life hours for extended service and reduced replacement frequency
• Fully dimmable with standard dimmer switches for adjustable light levels
• A21 lamp shape: 5.40 in. overall length, 2.62 in. diameter — verify fixture clearance before installation