The Light Efficient Design LED-7319 is a socket extender made for use with the LED-7318 & LED-7338 series PL retrofit lights. Adds approximately 1.7" in length to the light. Provides extra length when installing the light in a deeper fixture. Rated for 120-277V. G24q/d base. Measures 2.88" x 1.48". Sold in packs of 5