Beautiful opaline white glass shade, semi translucent milk glass. This has a classic shape, made to fit a large hanging lamp with hurricane.
It measures about 13" overall diameter. Fitter is 11 1/2" across, neck is 4 1/2" across the opening, shade stands 8 3/8" high overall.
There's very slight roughness to the rims, but overall, condition is excellent. A nice replacement shade for a vintage or antique lamp.