Military, Government and GSA Fulfillment LetterBank Signs + Print works as manufacturer , broker and fulfillment house for large quantity orders of signs, frames, lightboxes and printed decals. We have been working with large-quantity orders and custom sign products and printing fulfillment, on deadline and on budget for 27 years. See how to post a request for an RFP below. What is large-order fulfillment? Large-order fulfillment is where your agency or representative agent contracts for the manufacture, assembly and finishing, packaging and bulk delivery to a fulfillment house for redistribution at an agreed-upon cost. Which products are eligible for large-order fulfillment? Among the eligible products for large-quantity orders are stock or custom-specification lighted signs , such as marquee signs for presentation areas or special venues, lighted portable signs, LED signage and the like; for long-lasting outdoor architectural signs , for National Parks Service wayfi