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Among PAR LED bulbs, the PAR38 format addresses larger directional-lighting tasks in compatible flood fixtures, downlights and commercial displays. Select the beam for its intended reach and spread, then compare output and color appearance at the target rather than choosing solely by lamp size. For exterior use, the lamp's location rating and the fixture's requirements must both suit the exposure. Indoor display projects may instead make color rendering and dimming central to the choice, with dimensions, base and voltage established for the actual fitting.
