400MM-TRANSOM-DROPThe transom drop is measured from the top of the outer frame and then down to the centre line of the horizontal bar of a window. The standard transom from South Coast Windows is 400mm.

EQUAL-TRANSOM-DROP_new1_new1You can specify your own transom if required and the window opposite has a equal transom (split 485mm by 485mm) giving it the appearance of an old sash window and gives you a much deeper top vent on the window