US Patent 10295159 Selectively-extendable modular lighting fixture

A modular lighting fixture may include an elongate housing having ends and terminating in sidewall edges, an elongate lens having end edge portions and opposite elongate edges forming lens-sealing surfaces, each fitted to a corresponding one of the sidewall edges, a pair of end structures each removably attachable to either end of the housing, such end structures fitted to the lens; and a plurality of gasket seals including an elongate gasket between each elongate edge and its corresponding lens-sealing surface and a gasket between each end of the housing and its corresponding lens end edge portions.