With dimensions of 1350 x 1275 x 890 mm (LxWxH) and a pumping capacity of about 30-60.000 l/h, this filter is intended for koi ponds up to about 100.000 L and swimming ponds up to 200.000 L. Also with this system water must pass from top to bottom through the fleece – dirt cannot be left behind. No manual discharge of mud required! With a 1150 mm wide fleece role the 1200 S model offers a large filtration area.