Accurately display mailing and return address information with 100% MIP compatible double-window envelopes.
The perfect fit for MIP checks.
Secure sensitive financial information in MIP check envelopes. Our envelopes feature a security tint to keep contents confidential and protected. Shop our website for double-window self-seal MIP envelopes that are compatible with MIP checks. These envelopes are the perfect fit for MIP checks. Just fold and insert checks then easily seal the envelopes. Single window and windowless styles are also available.