Top Flight PSTF10NWT #10 Envelopes, Strip & Seal, Security Tinted, White Paper, 24 lb, 500 Count Go to amazon.com Related posts The 6 best envelopes self seal 2022 FeatureStandard 10 envelope ( 4 1/8 x 9 1/2)500 count per boxSecurity tintedStrip & seal closureHeavy 24lb white paper - made in USA DescriptionEnvelope