the windows to the main office floors are of particular interest, being a. s. spiers patent box frame types of queensland maple, which allow the sashes to be reversed for cleaning. steel windows are used to the light well of the building, providing some measure of daylight to the toilets, main stair and rear office areas. the main entry is from martin place and is via a set of trachyte steps to a glass automatic entry doorset. the original timber entry doors of inlaid queensland maple are in their original positions. the entry opening is surmounted by a cast bronze lintel bearing the inscription "no. 53" and has surface mounted letter to the granite over stating "apa building".