The best coffee requires a top-quality filter. Our premium paper filters are made in the Netherlands according to Technivorms precise specifications. The filters are bonded without using any chemicals or glues and theyre naturally whitened using a bleach-free, oxygen-based method.- #4 cone-shaped filters- 100 per box- For use in all 1 L and 1.25 L Moccamaster coffee brewers- Whitened using a bleach-free, oxygen-based method- No glues or chemicals used to bond filters- Made in the NetherlandsMoccamaster oxygen whitened filters are the perfect choice for clean, crisp coffee. Brown unbleached filters may leave a cardboard taste in your coffee, while permanent wire-mesh type filters can quickly clog with coffee oils. A clogged filter may result in your brew basket overflowing or steeping the coffee too long, potentially resulting in over-extracted bitter-tasting coffee.We recommend rinsing your filter before use to help it stay open while filling and to ensure that any residual paper flavour is washed away.