Pre-owned Steelcase SiLQ Conference Chair. A breakthrough in conference seating, SILQ is beautiful and adjustable. Its intuitive ergonomics are perfect for shorter sits and its high-back adds elegance to every room. Finishes: Grey / White. Functions: Pnuematic Height Adjustable Seat / Fixed Arms. Dimensions: 25 1/2" W x 23 1/2" D x 16 1/4" - 20 3/4" Overall seat height / 37 1/2" - 42 1/4" Overall height.