https://www.hireyele.com/product/Compact-Flourescent-Built-in-Lampholders-For-T8-G13-Fluorescent-Lamps.html
Compact Flourescent Built-in Lampholders For T8 G13 Fluorescent Lamps
North America Hot Compact Flourescent Built-in Lampholders For T8 G13 Fluorescent Lamps
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https://www.terralec.co.uk/lampholders/gy19_lamp_holder/23092_p.html
GY19 Lamp Holder - Lampholders
The GY19 ceramic lamp holder is suitable for use with lamps with the GY19 base. Dispatched from stock for quick delivery
lampholder
https://s-lilley.co.uk/product/50mm-dia-smith-sconce-steel/
50mm dia Smith Sconce steel - Brass Lampholders & Components, UK | S. Lilley & Son Ltd
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