12 x 16 x 4 Envelopes

Thick document sets can be stored or mailed without dividing related materials across several packages. JAM Paper 12 x 16 x 4 inch envelopes provide substantial capacity for catalogs, reports, folders, manuals, booklets, contracts, and administrative files. This expandable size supports corporate mailrooms, schools, legal offices, government agencies, and fulfillment departments.

Long-side access makes wide printed materials easier to insert, remove, and distribute without unnecessary folding. Booklet-style construction works well for publications, presentation folders, marketing materials, educational packets, financial reports, and project files. A 4 inch expansion accommodates stacked papers and thicker contents that standard flat envelopes cannot hold efficiently.

Lightweight white construction creates a professional appearance for large business mailings without adding excessive packaging weight. Durable 14 lb material provides practical coverage for records, printed pieces, and grouped documents during storage or transit. A peel & seal closure supports fast preparation while helping contents remain securely contained from packing through delivery.