Original company was Sterilight which was taken over by Viqua so either brand name my be on your system.
A very common lamp with uneven pin configuration as per picture. – (One long, one short and two even pins)
S 287RL 14 watt 287 mm long
S 410RL 410 mm long for for VIQUA VH410, VH410M, SC-410, SCM-410, SPV-410, SP410-HO and SPV-8 Series UV systems
S 36RL 40 watt lamp 830 mm long for the BA-ICE power ballast most commonly supplied with the older Sterilight systems
