Carbon Block Filter Cartridge for Novatek, Duro, Hydrotech, Watergroup and Clack Reverse Osmosis Systems 

Fits all four and three stage reverse osmosis / RO systems. This filter is also used as a pre-carbon and also the post carbon filter.

Used in models F-HT-50, F-HTF-50, 1240 Series, 1240 E Series,1240 M Series, 1240 Pro Series,  4VTFC50G, 4VTFC50GPB, 4VTFC50G, 4VTFC50GPB, 4VTFC09G-PB, 4VTFC50G-PB, 4VTFC25G-PB, 4VTFC75G-PB and others...

Best always to check your manual if you have a very old system or unusual model number.

These are often refered to as candle mount filters.

This is an original manufacturer's replacement filter.

Part # 41400009

Old Part # 41400075

Manufactured by Canature/Water Group