Our invoices were designed to be used with double window envelopes. When folded into thirds, the invoice fits perfectly so that the customer's billing address and your companies address are displayed in the appropriate windows. We sell both the shipping and the check return double-window envelopes.
You can also provide your customers with the convenient check-return envelopes. These envelopes are slightly smaller than the larger Shipping Envelope so they fit inside perfectly. When your customers tear-off the invoice's payment coupon they can quickly and easily include it with their payment in this envelope and the correct addresses are displayed in the appropriate windows. Studies show you're more likely to get paid on time when you offer this convenience to your customers.
We can prove it! See our individual product prices and compare to any other supplier.