This 1lamp shade is equipped with a washer fitter. This is the most common fitter type. The washer generally rests on the top of a metal harp (not included) above the light bulb and is held in place by a screw-on finial. The outside of the lampshade has a fabric covering. The inside is styrene (white plastic). The trim is the same color as the covering.
at Froy.com
at Etsy
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at Wayfair
at Wayfair