Designers Edge H11075 7 3/8-inch Infared Heat Lamp Bulb, 620-watt. Commonly used in garages, work shops, and commercial areas. Infrared heating technology, radiant heat warms the skin up to 8 feet in front of the heating element. Used as replacement lamps for the designers edge l-185 combination shop and heat light fixture. T-3 based infrared heat lamps are compact in size and has a rated life of approximately 5,000 hours. Made for designers edge heatzone patio and shop light heaters. Compatible with 120-volt applications. The infrared technology is clean and doesn't off gas any fumes, for a clean source of heat. To help ensure bulbs achieve their maximum life, install replacement lamps with clean gloves to prevent oils from contacting surface of bulb. TOLL FREE HOTLINE, 1-800-561-4321. If you have immediate questions about application, installation, troubleshooting, or a damaged component, please call CCI Consumer product hotline at 1-800-561-4321 or email questions to: firstname.lastname@example.org. The Designers Edge (R) brand is a registered trademark of Coleman Cable Inc.