These 9 x 12 inch white clasp envelopes are made from 28 lb woven paper stock, a heavier-weight material that resists tearing and provides more structural integrity than standard bond envelopes. Each envelope opens fully to accept letter-size documents flat and unfolded, keeping contents secure and presentable through the mail stream.

The dual-closure design makes these envelopes especially practical in office and institutional settings. The reinforced metal clasp allows repeated opening and re-fastening, supporting interoffice routing, multi-trip document handling, and internal distribution workflows. When a permanent seal is required, the gummed flap provides a tamper-resistant closure suited for outgoing client correspondence, legal filings, and records transfers.

Constructed from woven 28 lb stock and finished with a clean white exterior for professional presentation, these envelopes arrive in cases of 500 and ship via parcel carrier, making them practical to stock in mail rooms, administrative supply areas, and fulfillment operations that process regular document mailings.