Unique 14+ Bathroom Exhaust Fan Light Cover Replacement. Dysmio ceiling fan light covers, ceiling fan globes replacement glass, light fixture replacement glass, lighting replacement. Since most bathrooms must have an exhaust fan and light, many homeowners install combination fixtures. A wide variety of bathroom exhaust fan cover replacement options are available to you, such as plastic. If the cover has a metal nut at the center, turn it counterclockwise to.