Knoll Hat Trick ArmchairDescription Dimensions The Hat Trick Armchair is part of the Frank Gehry collection from Knoll. Inspired by the surprising strength of the apple crates he played on as a child, Frank Gehry created his thoroughly original collection of bentwood furniture. The ribbon like designs transcend the conventions of style by exploring, as the great modernists did, the essential challenge of deriving form from function. Height: 85. 0cm Depth: 57. 0cm Width: 59.