100-Box Pack of White #10 1-2 Square Flap Gummed Closure Catalog Envelopes Measuring 9 X 12

Quality Park® catalog mailing envelopes are perfect for shipping, storing or organizing. Heavyweight 28-lb paper withstands extensive handling at home, in the office or on the mail route. These envelopes are perfect for small flat or larger folded documents. A wide, heavily gummed commercial flap seals tight with moisture to keep inserts secure. Center seams give added strength for heavy contents. Seam Type: Center; Flap Type: Square; Trade Size: #10 1/2; Security Tinted: No.