Size 4 Coffee Filters: Shop #4 White Paper Coffee Filters | Moccamaster USA
Cleaning & #4 Filters Bundle | Moccamaster USA
Amazon.com: Quell Reusable #4 Coffee Filter for Technivorm Moccamaster KBGV and KBT Coffeemakers: Stainless Steel, Reusable Alternative for Sustainable Brewing: Home & Kitchen