Cascade 600 and pre December 2000 Cascade 100/100-S foam sponge filter - 3420

Suits pre December 2000 Cascade 100/100-S and Jan 2001+ Cascade 600 Model Nos 3007, 3306, 3307, 3308.

You can fit an optional Small Block Filter to this pump.  This filter replaces the existing small foam filter.