OO Guage Yellow Warning Panel Transfers For NIR 111 Locomotives. Condition is "New". These were used on various versions of the NIR 111 Class locomotives. The items are all of waterslide type, and the dimensions are detailed below: Plain panel - 30mm long x 9mm high Shallow panel with cut out for headlights - 33mm long x 8mm high Deeper panel with cut out for headlights - 33mm long x 14mm high.