Designers Edge L765 Compact Fluorescent Mogul Base 4U Replacement Bulb, 65-Watt. Equivalent to a 300-watt incandescent bulb. Updated in 2013 , this non-integrated CFL lamp requires internal ballasted fixture to operate. This 65 Watt fluorescent 4U lamp style is Energy saving with 3800 Lumen output equivalent to 300 Watt incandescent light bulb. Fits mogul base socket as found in Designers Edge Security Fixtures models; L1755, L1756 and L1767. Light specifications have temperature rating of 6300K with light output of 3,800 Lumens. 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: consumer.service@colemancable.com. Designers Edge ( R ) is a registered trademark owned by Coleman Cable Inc.