2PAK:WW-5BW8-6
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36725022-2PAK:WW-5BW8-6
FOR SYLVANIA F5TT/D827 2 PACK
the distance between two baselines of lines of type. The word 'leading' originates from the strips of lead hand-typesetters used to use to space out lines of text evenly. The word leading has stuck, but essentially it's a typographer's term for line spacing.