My victorian house has two skylights. One sky light is original, and is located above the stairs. It has small vents on the sides, and one would tug at a pull chain to open the vents to let the hot air out (it was an old fashioned air conditioning system). The other skylight is in the bathroom, and it was replaced a few years ago. It has no vents - just glass. The problem is that the bathroom has no ventilation system, and instead of installing an electric ventilator, we would love to install something similar to the original skylight we have above the stairs. At some open house, we saw a skylight/ventilation system in the bathroom. The skylight was glass and it had a round hole in the middle with a tin cap. We tugged on the pull chain, and it ventilated the entire bathroom. The owner of the house was not there, so we couldn't ask where he purchased the sky light. Does anyone know where I can buy this kind of sky light? Thanks.