Universal® Catalog Envelope, 24 lb Bond Weight Paper, #10 1/2, Square Flap, Gummed Closure, 9 x 12, Brown Kraft, 250/Box (UNV41105) Pack of 250Universal Catalog Envelope Wide gummed flap produces a secure seal. Quality paper stock resists ripping and tearing. Global Product Type: Catalog Envelopes Seam Type: Center Flap Type: Square Trade Size: #10 1 2 Security Tinted: No Opening: Open End Envelopes Mailers Closure: Gummed Exterior Material(s): Kraft Paper Stock Basis Weight: 24 lb Bond Envelopes Mailers Exterior Dimensions: 9 x 12 Color(s): Brown Kraft Color Family: Brown Product