Search query: 10 open window envelopes without plastic window

Product: Quality Park Redi-Seal Security Window Envelopes, 10 (4 1/8" x 9 1/2"), White, Box of 500 Save time with Quality Park security envelopes that have built-in Redi-Seal technology closures - requires no moisture to seal! Quickly get that stack of papers delivered to important recipients.
Simply raise the lower flap and press to seal.
Addresses appear through window - no need to hand-address these security window envelopes.
Quality Park envelopes feature a unique double flap design that keeps the gum from sticking before use.
Security-tinted inside for privacy and confidentiality. Quality Park White

Product: Quality Park Redi-Seal Double-Window Security Envelopes, 10, 4 1/8" x 9 1/2", White, Box of 500 You're too busy to seal your double-window envelopes the old-fashioned way. Thanks to Redi-Seal closures, these Quality Park security envelopes keep the contents secure and require no moisture to stick.
Redi-Seal envelopes are easy to secure. Simply raise the lower flap and press to seal.
Double-window security envelopes contain 2 poly windows - one for the return address and one for the mailing address.
Quality Park envelopes, featuring a unique double-flap design, keeps the gum from sticking before use.
Security envelopes feature a tinted inside for privacy and confidentiality. Quality Park White