Columbian #9 Security Envelopes, 500 Pack, Double Window Self Seal Envelopes for Invoices and Business Mailings, 3-7/8" x 8-7/8", Durable 24 lb White Paper

Columbian #9 Security Envelopes, 500 Pack, Double Window Self Seal Envelopes for Invoices and Business Mailings, 3-7/8" x 8-7/8", Durable 24 lb White Paper