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MANUFACTURER: Quality Park ProductsProduced by Quality Park Products. Airmail Envelopes Red and blue border with airmail symbol on lightweight white stock. Blue tint interior. Traditional seam construction. 500 envelopes per box. [5 Boxes per carton.] #10 Trade Size 4-1/8 x 9-1/2 Customers also search for: #10;13-lb. Sub.;4-1/8 x 9-1/2;Airmail;Airmail Envelope;Business Envelopes;Envelope;Envelopes;QUALITY PARK... More Information