Mead Press-it Seal-it No.10 Security Envelopes, 4.125 x 9.5-Inches, White, 45 Count, Pack of 2 (90 Count In Total)( 75026) Go to amazon.com Related posts Best mead security envelopes for 2022 FeatureEnvelope_Size - 4 1/8 x 9 1/4Envelope/mailer_Type - Business/TradeClosure - Self-AdhesiveTrade_Size - 10 DescriptionMead Press-It Seal-It #10 Security Envelopes 45 Count (75026)