It has a regular screw in socket. So you can put in any light bulb that fits.
It is the whole piece (with socket) that fits inside a can.
Yes it can be used.
It can be installed to an existing housing can.
Compatible with any insulated and non-insulated ceiling 6 in. housing.
The H7ICAT should have a socket bracket on which the socket is attached at the center. To either side of center hole are keyhole slots. The customer can feed the hooks of the CAT624CH springs into these holes.
No it's not.