This photo shows the top mounted damper\cap ready to be installed. Note the high temperature gasket used to seal the top when it's closed. The entire unit is aluminum and Stainless Steel so you won't have problems with corrosion.
	This is a side view of the unit that shows where the gasket seals on the bottom frame.
	Here is a close-up of the mounting bracket with the cable coming down from the damper\cap. The chain section allows for "fine tuning" of the damper when in use.
	This is a view to show what it would look like in your fireplace
	This is what the unit looks like on top of your chimney flue when it's open for use.
	This shows the same unit in it's closed position. When closed it will keep out rain, animals, and debris.