In addition to being the only provider of an on-demand tray and sack tag generator, Whittier also carries a variety of mailing supplies. For example, we carry wafer tab seals of almost every shape, size, and color.With warehouses strategically located across the US, our customers can get timely delivery of critically needed supplies. Call us for more information about our diverse line of mailing supplies and products. We can be reached toll free at 888-872-9824.