SB11 is a large submersible eyeball fiber optic fitting designed for constant immersion in swimming pools, ponds, and water features. Constructed with durable stainless steel and a 0.51” (13mm) clear focusing lens, it provides underwater side-lighting from the mounting surface. The lens offers a 20°–40° focus range, while an o-ring and locking ring provide superior sealing against water ingress. Designed for flexible mounting via a backnut or separate backbox, it easily supports fiber sizes from 0.08” (2mm) up to 0.24” (6mm) or 0.31” (8mm). Featuring a wide 2.05” (52mm) flange, SB11 delivers reliable, highly accurate performance in demanding aquatic environments.