Envelope-#9 Double Window, Security, Redi-Seal 500/Box - QUA24529
Quality Park envelopes make mailing easy and efficient with Redi-Seal® closure, no moisture required to seal. Unique double-flap design keeps the gum from sticking before use. Simply raise the lower flap and press to seal. The 1-3/16" x 3-1/2" top window