Hoya Optics Division U-325C as cast SW filter. Width 2.65 inch ~6.7 cm. Length 9.25 inch ~23.5 cm. Filter is the replacement for all SW and MW TripleBright, TripleBright II, TripleBright 3, and Dual TripleBright II and Dual TripleBright 3 (two filters required for each UV light). Model FS-60.