Search query: 9x12 clasp envelopes

Product: Amazon Basics 9 x 12-Inch Clasp Kraft Envelopes, Gummed, 100-Pack Clasp envelope (100-pack) for filing, storing, or mailing documents
Double-prong metal clasp closure and reinforced eyelet keep documents securely contained
Moisture-activated gummed surface on flap creates a permanent seal
Made with thick 28-pound kraft paper for reliable strength and protection
Measures 9 by 12 inches each; backed by an Amazon Basics 1-year limited warranty Amazon Basics Kraft