SupremeX Double Stacked Window Envelopes - #9 - Open Side - 24lb White Wove - Security Artline - 3-7/8" x 8-7/8" - Box of 500

These SupremeX Double Stacked Window Envelopes are designed for high-volume business mailings that require accuracy- confidentiality- and a professional appearance. Featuring a #9 open-side format with double-stacked windows- they allow multiple lines of information to align perfectly with enclosed documents- eliminating the need for manual addressing. Made from durable 24 lb white wove paper- these envelopes include security artline interior printing to protect sensitive information and prevent read-through. Measuring 3-7/8" x 8-7/8"- they are ideal for statements- invoices- and transactional mail. Box of 500.