Enhance your caravan's water system with the Truma Ultraflow Compact Housing in white.  This Ultraflow Compact Housing/Winter Kit is the standard housing for a pump assembly (or Ultraflow accessory) that does not include a filtration system or accessory point.  
 
An ideal introduction to the Ultraflow system for those who don't already have it.
Included components: one Ultraflow Compact Housing, one blind cover, and one set of screws.