SELF SEAL ENVELOPE- Just peel and stick 4 1/8 in. x 9 1/2 in size envelop. MPN: 10 Security Envelopes Windowless. Size: 500 Count. Item model number: #10 Security Envelopes Windowless. CAN'T SEE THROUGH ENVELOPES - Security printing pattern on the inside prevents from seeing what inside.
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