Square & Flat Shapes
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Square and flat compact fluorescent lamps offer a unique low-profile form factor for slim ceiling fixtures, bulkhead lights, and specialty decorative luminaires. Unlike traditional tubular CFLs, these lamps use a flat, folded tube arrangement — sometimes described as butterfly or pretzel shapes.
This category includes 2D lamps, PL-Q (flat quad), and FML styles with GR10q and GR8 bases. These lamps are commonly found in European-style slim ceiling fixtures, emergency lighting, and architectural applications where a compact, flat light source is needed.