All new Wigmore Light Sculptures are lit by strip LEDs with a color temperature of 2400K or 2700K warm white lights. Each fixture includes dimming drivers integral/inside each fixture. All pieces are made for a two-wire hookup to the house electrical or it can be configured for a four-wire hookup.
Most older Wigmore lights used incandescent linear tubes commonly referenced as Linestra bulbs. Due to the recent changes in lighting, these incandescent bulbs have been discontinued and are out of production. Several companies make LED replacement bulbs but, I have found that Sunlite brand makes the LED Linestra Bulbs with a similar light quality and the bulbs are dimmable. They fit all types of sockets installed in Wigmore lights. There is a link below to purchase these bulbs.
We recommend having a professional electrician remove the incandescent glass bulbs from older pieces
Linestra Bulbs on Amazon:
20" Bulbs: https://www.amazon.com/gp/product/B017GULDLQ/ref=ppx_yo_dt_b_asin_title_o01_s01?ie=UTF8&psc=1