Stonco VW patented Roughlyte fixtures are for use on ceilings and canopies. Fixtures guard against moisture and debris in exterior applications (for globe down mounting only). Not recommended for use in hazardous locations. Fits all 4 inch round and octagon boxes. Fixtures are supplied with a heat and shock resistant glass or polycarbonate globe. Sockets are pre-wired with extra long 1/2 inch stripped leads. For 3/4 inch conduit, use VW series with VXL13 universal box.