Spiral GU24 Base

ADD TO CART	Part #	DESCRIPTION	CASE QUANTITY	PRICE EACH
Spiral GU24 Base
	13W/ODSGU/27K	13W T2 Spiral GU24 Base 27K, 10,000 Hour, 3.4 Inch MOL	50 per Case	3.14
	13W/ODSGU/41K	13W T2 Spiral GU24 Base 41K, 10,000 Hour, 3.4 Inch MOL	50 per Case	3.14
	18W/ODSGU/27K	18W T2 Spiral GU24 Base 27K, 10,000 Hour, 4.3 Inch MOL	50 per Case	3.90
	18W/ODSGU/41K	18W T2 Spiral GU24 Base 41K, 10,000 Hour, 4.3 Inch MOL	50 per Case	3.90
	23W/ODSGU/27K	23W T2 Spiral GU24 Base 27K, 10,000 Hour, 5.0 Inch MOL	50 per Case	4.44
	23W/ODSGU/41K	23W T2 Spiral GU24 Base 41K, 10,000 Hour, 5.0 Inch MOL	50 per Case	4.44
	46528	26W T2 Spiral GU24 Base 27K, 10,000 Hour, 5.2 Inch MOL	30 per Case	4.50
	46529	26W T2 Spiral GU24 Base 41K, 10,000 Hour, 5.2 Inch MOL	30 per Case	4.50
	46530	26W T2 Spiral GU24 Base 50K, 10,000 Hour, 5.2 Inch MOL	30 per Case	4.50

What is a GU24 base and how is it related to CFLs?

* The GU24 socket and base system is designed to replace the Edison socket and base in energy efficient lighting fixtures. The ENERGY STAR® Program Requirements for Residential Lighting Fixtures, Version 4.0 require that residential lighting fixtures cannot use the standard Edison screw base, even if they do not have a built-in ballast.

The same requirement is included in California's Energy Efficiency Standards for Residential and Nonresidential Buildings, known as Title 24-2005. This requirement is designed to insure that fixtures that receive ENERGY STAR® qualification when using an energy-efficient self-ballasted CFL, or are qualified as energy-efficient under Title 24-2005 cannot be operated with an incandescent lamp.

The GU24 socket was designed to be compatible with these energy efficiency regulations. The GU24 base has two dual-diameter pins; the smaller portion having a diameter of 3.4 mm (0.13 inches) while the larger portion has a diameter of 5 mm (0.2 inches). [A link to a drawing of a GU24 base will be added.] CFLs with a GU24 base are designed to be connected directly to the power line, so they are functionally equivalent to screw-base CFLs instead of normal pin-base CFLs.

Unfortunately, ENERGY STAR® refers to CFLs with the GU24 base as self-ballasted pin base lamps, a designation that may lead to confusion with pin-base CFLs that do not have an integral ballast. Some manufacturers are also making modular ballasts with a GU24 base on one end and a socket for a normal pin-base CFL on the other. These modular ballasts can be used to adapt normal pin-base CFLs to fixtures that have the GU24 socket, thereby reducing the amount of material that must be thrown away when the lamp fails.