Functional Box 5 Year 1998 Medium boxes Materials acrylic, gold leaf, silver leaf, poplar, purpleheart Dimensions 3.5″h × 12.25″w × 4.75″d ← Blue Heart Box (1998) Adeu Hong Kong (1997) → Related works Functional Box 13 1999 Functional Box 15 1999 Functional Box 8 1999 Double Stack Box 1999