Add additional security and simplify your mailing projects with the single window confidential envelope. Save time with these envelopes - just stuff, seal and send. They're designed to be perfect companions to your important documents. Quality construction stands up in the mail. Mailings fit perfectly, so addresses don't slide out of view. Mail with peace of mind with these executive document mailers. This 8 5/8 X 3 5/8 privacy envelope is self sealing for extra convenience and to save you valuable time in your business.