SQUARE STRAIGHT (SS) Series OVERVIEW Smooth finish, square straight composite shaft. Lightweight - easy to handle and install Will never rust or corrode Durable - dent resistant Direct embedded and anchor base models Available in 4" and 5" square models. 10’ – 30’ mounting heights Download product overview. Whatley straight square composite poles are a great choice for architects, engineers and planners seeking a contemporary light pole design. Specifications Select pole size below for Specification Sheets and other details. SS Series: SS4 Max pole height = 25' SS5 Max pole height = 30'