You can make them open with a solid cover so you can put in electrical wiring for a ceiling fan and lighting.

I don't dream of a ceiling fan which is always here spinning above my head. I dream of a cool weather

The toxicity of an electrical wiring error is a function of the dirty electricity and the electrical items plugged into the faulty electrical circuit.

It began in the back room in the ceiling of the poultry shop, but the cause and the origin of the fire is still under investigation. The owner was on the premises when the fire began.

Ooh. He was wide open.

In their defensive alignment their safeties were playing deep and their cornerbacks were near the sideline. We had guys open all night.