This casing is a genuine direct replacement for the 11 and 6w versions of the Yamitsu Algae master ultra violet clarifier.
The physical dimensions of the Algae master 6 & 11 watt have not changed since it was first built, this casing is the most recent black colouration and replaces the white and grey types. All original parts are interchangable so you can swop out the glass sleeve, lamp, screw caps.
The only thing you may need are new hose tails and these are ofetn glued in place and do not come with this body
Please note this is not the casing required to fit to the mega box filters.