Choose from small to large windowless catalog envelopes. Catalog envelopes are perfect for shipping catalogs, calendars and other large brochures. Windowless catalog envelopes ensure that the contents of your package are kept hidden. If you can't find the windowless catalog envelope size, color or style you're looking for, contact us and we'll be happy to help you! Order your windowless catalog envelopes in bulk and save with free shipping on orders over $99.