Fits models: "SLIMLINE", 501, 511, 520, 521, 531, 600, "UNIVA STOVES" 621B, 621W, 631, U305B, U405B (Excluding Thermofan models), DBO253, DBO331, DBO338, DBO367, DBO369, DBO370, DBO371, DBO373, DBO374, DBO375, DBO376, DBO377, DBO379, DBO381, DBO382, DBO383, DSS406, DSS451, DSS455, DSS456, "BAUER" B336B, "UNIVA" U116B