Ultra resin packs for your Unger HydroPower Ultra filter. Choose 1 or 3 packs for filter S, or the set of 3 for filters L and LC.
✓ Ultra resin packs deliver 30% more pure water per resin fill
✓ FloWater 2.0 technology ensures efficient water flow through the whole tank, so you use less resin
✓ Premium Ultra resin, specially developed for window cleaning
