These premium paper filters impart no extra taste to your coffee, and are extremely consistent and sturdy. The whitening process does not use chlorine, and the paper is certified dioxin-free. Sealed for your protection during Warehouse and shipping. The paper used by Filtropa is also approved by the International food and Drug Administration and regular quality controls are performed by renowned institutions as isega and tub. Bv Filtropa was founded in 1962 and is still one of the leading manufacturers and supplier of paper coffee filters to the world Located in maastricht, the Netherlands. Flat bottom filters. Individual filter dimensions flat: 5. 125”-Side to side 3. 75”-Top to bottom 2” wide-flat bottom