100 9 x 12 SELF Seal Security White Catalog Envelopes - 28lb - Security Tinted, Ultra Strong Quick-Seal, 9x12 inch (38100)
Aimoh
9 X 12 Self-Seal Brown Kraft Catalog Mailing Envelopes - 28lb - 100 Count, 9x12 Inch (38300)
Aimoh
Amazon Basics #10 Security-Tinted Self-Seal Business Letter Envelopes, Peel & Seal Closure - 500-Pack, White
Amazon Basics
100 Mailing Envelopes, Self Seal Letter Size, Number #10 White Windowless Security Tinted Envelope, 4-1/8 x 9-1/2 Inches, Quality 24 LB
Splendoress