The Boylston is another product of a fruitful collaboration with Halvorson Design Partnership. This unique design draws on ancient graphic elements, and plays upon our timeless attraction to primitive interlocking and repeating geometries. Conforms to ADA Accessibility Guidelines. Available Materials: 100% Recycled Grey Iron, Ductile Iron, 100% Recycled Aluminum, Silicon Bronze, Nickel Bronze. Available finishes: Raw Natural Finish Rust Conditioner (Grey and Ductile Iron Only), Polyester Powder Coat, Liquid Coat (Available upon request), Brush (Aluminum, Bronze and Nickel Bronze Only), Polish (Aluminum, Bronze and Nickel Bronze Only).