1099 Double Window Envelope, Commercial Flap, Gummed Closure, 5.63 x 9, White, 24/Pack Cost-effective gummed closure creates a durable, machinable envelope ideal for bulk mailing machines. Preprinted with IMPORTANT TAX RETURN DOCUMENT ENCLOSED on front. Left aligned double windows fit your 1099 forms precisely to conceal all personally identifiable information. A security tinted pattern keeps confidential information safe, even when held to light.
