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Incandescent S11

S11 high-intensity and coloured indicator bulbs, 7.5W to 40W, on E26 and intermediate bases. Signs, panels and indicators.
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S11 Indicator & High-Intensity Bulbs

S11 lamps in high-intensity clear at 25W and 40W, and in coloured indicator versions at 7.5W in green and blue, on E26 medium and intermediate bases.

S11 is a small tubular-sided shape used in indicator panels, sign cabinets and equipment housings rather than in room lighting. Base type varies within the shape, so it is stated on every SKU — intermediate and medium are not interchangeable.

Low volume, but it is a line hardware buyers cannot easily source elsewhere. The sign-lighting equivalents are in S14 coloured.