Afanlight is a form oflunette window (transom window), often semicircular or semi-elliptical in shape, withglazing bars ortracery sets radiating out like an openfan.[1] It is placed over another window or a doorway,[2][3] and is sometimes hinged to atransom. The bars in the fixed glazed window spread out in the manner of asunburst. It is also called asunburst light.[4] Infederation housing it is also called a toplight or top light.[5]
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