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Check envelopes
 | 40-224 - Large self seal double window envelope A large size self-seal double window envelope with security tint. Use when inserting the entire check without tearing off either stub. |  |
 | 40-338 - Self seal security double window check envelope Protect your checks with our self-sealing security envelopes. The triangular perforations on the flap will reveal if the envelope has been opened. | |
 | 44-005 - Double window check envelope Companion double window check envelope. Regular seal with blue security tint. | |