A light fixture or troffer for directing light emitted from a light source toward an area to be illuminated, including a reflector assembly within which the light source is positioned, a lens assembly detachably secured to a portion of the reflector assembly such that a lens of the lens assembly overlies a portion of the light source, and a plurality of end caps secured to a housing of the light fixture and overlying a portion of the light source such that substantially all of the light emitted from the light source passes through the lens assembly and the end caps.