Reflected Sky Horizon Window Year 1977 Medium sculpture Materials steel, mirror, cast concrete Dimensions 75.5″h × 108″w × 40″d ← Frame of Reference 30th scale (1979) Act of Squared Reflection (1976-80) → Related works Frame of Reference 30th scale 1979 Standing Act 1973 2-Side Slant 1980 Complex Square 1 1980
