7-Sided box Year 1999 Medium boxes Materials iridescent acrylic, birch plywood, maple, mahogany Dimensions 3.25″h × 12.5″w × 6.25″d ← Sounds Off Trio (2000) Double Stack Box (1999) → Related works Functional Box 13 1999 Functional Box 15 1999 Functional Box 8 1999 Double Stack Box 1999