This sponge foam pre filter block has been designed to fit to many 'Sump Pump' type pond pumps such as the Draper pumps. This foam will help pre filter the larger debris out from clogging the pump rotor/impeller up.
Square coarse grade black foam block
Ideal for sump style pond pumps
255 mm x 255 mm x 125 mm
125 mm diameter centre hole x 70 mm deep