Supply Co. Poly Mailer - 6" x 9" PreviousSingle Wall - 12” x “10 x 10” Box NextPoly Mailer - 14" x 19" Poly Mailer - 6" x 9" Poly Mailer - 6" x 9" $58.00 1000 pieces per box.1 box minimum. Sold per case only. Quantity: Add To Cart Facebook0 Twitter LinkedIn0 Reddit Tumblr Pinterest0 Qty of 500 pcs.