Stock up on the essentials. If you have a home BUNN coffee maker these filters are for you. Sized at 2.75" x 3", they can be used with any of the NHBX, BX or GRX models, as well as the thermal carafe BTX-B model. The BUNN continuously inspects their filters for proper porosity, flowrate, and structure, all of which are essential to delivering that same great tasting cup of coffee every time. These filters are also 100% biodegradable and made of 100% pure virgin fiber. Available in a box of 100.