Linear fluorescent lamp end cap locking system

A locking system for two linear fluorescent lamps comprises an endcap ( 10 ) formed to receive two linear fluorescent lamps ( 12, 14 ) (FIG. 3 ). The endcap ( 10 ) has two chambers ( 16, 18 ) formed by the outside surfaces of endcap ( 10 ) and a central partition ( 19 ). Each of the chambers has a forward portion ( 20 ) and a rearward portion ( 22 ). The endcap ( 10 ) has a height H equal to the diameter of the fluorescent lamps, a width W equal to twice the diameter of the fluorescent lamps and a length, for example, 4 to 6 inches, that is substantially less than the length of the lamps, which can be one to eight feet long. A stop ( 24 ) is formed in each of the chambers at the forward portion ( 20 ) to retain the lamps within the endcap. Each of the stops ( 24 ), in the form of a reverse corner, extends inwardly toward the center of the endcap and has a first leg ( 26 ) with a first dimension equal to the height H and a second leg ( 28 ) with a second dimension that is greater than one half of said height H but less than the height H.