Kosher-certified, gluten-free coffee filters feature microfine flavor enhancing perforations to allow the full coffee flavor to filter through for a rich, flavorful cup of coffee. Double-crimped design helps protect against bursting & tearing to prevent messy use. Plus, its disposable design allows fast, simple cleanup after each use. No. 4 coffee filter is designed for use with all 8 to 12-cup cone coffeemakers (sold separately).