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QP Reveal-N-Seal™ Double Window Env Unique adhesive application provides a strong, moisture-free secure seal. Three-year shelf life is six times longer than standard latex adhesive envelopes. Small perforation along flaps can reveal evidence of tampering. Envelope Size: 3 7/8 x 8 7/8; Envelope/Mailer Type: Double-Window; Closure: Self-Adhesive; Trade Size: #9.
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