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CPR LID FOR RSS05 RETROFIT OVERFLOW BOX, 6.375 x 2.75 for Surface Skimmer
RSS / RSSDX Overflows Retrofit Surface Skimmer
The RSS Overflow is a simple way to add a surface skimmer to any tank. It is also a great way to keep the water level at a constant in your saltwater aquarium as well as increase the rate at which surface water, and the film and dust with it, is removed from the aquarium. 
Users can choose between the regular unit or the DX model depending on the installation method they desire. Regular units have an open back so that the walls of the RSS overflow can be silicon-mounted right up to the back wall of the aquarium. Alternatively, to install without silicon, users can drill an additional bulkhead hole into the back wall of the DX model to match the size of the overflow bulkhead. The bulkhead can then be used with additional washers for a more simple, and easily removable installation. 
Features and Benefits
Reduces amount of surface proteins
Increases oxygen exchange of the aquarium water
Improves the effectiveness of the filtration system
CNC routed grates for clean appearance
Easily installs onto the back walls of aquariums with a dilled overflow
Fully routed grates are closed off on top for increased grate support
Available with open back for installation with silicon (Regular unit)
Available with closed back for installation with bulkhead (DX unit)
Black Lids are available (optional)
*** Users are required to drill an additional bulkhead hole into the DX model`s back wall for installation with bulkhead 
RSS05 & DX - 6 3/8" L x 2 3/8" W x 3 5/8" H (Nano tank)
RSS07 & DX - 5 1/4" L x 3 5/8" W x 5 1/4"H (Up to 60 gallon tank)
RSS12 & DX - 7 1/4" L x 4" W x 5 1/4" H (Up to 120 gallon tank)
RSS18 & DX - 12 1/2" L x 4" W x 5 1/4" H (Up to 200 gallon tank)
RSS24 & DX - 18 5/8" x 4" W x 5 1/4" H (Up to 300 gallon tank)

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