Truma Spare 46030-01 Ultraflow Compact Housing WHITE (17 ratings) £29.98 inc. VAT (where applicable) Quantity: at £29.98 each Add To Basket 9 in stock. The 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. A good way to introduce Ultraflow to your system if you don't already have it. Included components: one Ultraflow Compact Housing, one blind cover, one set of screws, one set of instructions. Available in white.