BUNN Coffee Filter 20131.0000 is a wider version of the #20113.0000 filter and is designed to be used with Bunn 10-gallon urns. The #20131 filter has a base diameter of 24.25″, which is one-half inch wider than the #20113 filter at 23.75″. The dimensions of the #20131 coffee filter is 24.25″ flattened diameter, 10.75″ base diameter, and 6.75″ side height. The #20131 filters come with 250 filters/case. There is FREE SHIPPING on this Bunn product.