The aim of the article is to explain the meaning of a frame as a painting border. Its explanation will be presented on two levels. By taking the first level into consideration I indicate the special place of a frame as a border between entity (reality itself) and non-entity (a painting). The last one is here understood as an object that does not exist in the strict sense of the word “exist”. It means that its frame is the phenomenally given (...) sign of existential negation. As far as the second level is concerned other meaning of a frame will be taken into account: as a border between autonomous and primary entity and an “entity” whose being is secondary and derivative. (shrink)