Page 66 of the Rice Signs 2017 Traffic Safety Catalog covers 9.5 inch Slot Street Name Sign Brackets — the hardware that mounts standard 9 inch tall extruded aluminum street name signs to sign posts. Cross Brackets (H-500 series) clamp around a round, square, or U-channel post and present a horizontal slot for a single street name sign. Post Cap Brackets (H-525-F, H-559-F) mount on top of a round post and can present two street name signs (one for each cross street) in a perpendicular configuration. All brackets are powder-coated to match standard street-name-sign colors (green, blue, brown, black, white) and accept 9 inch tall blade-style signs.