Aimoh 500#9 Double Window SELF Seal Security Envelopes - for Invoices, Statements & Documents, Security Tinted - Size 3-7/8 x 8-7/8-24 LB - 500 Count (30139)

Aimoh 500#10 Security Self Seal Envelopes, Windowless, Premium Security Tint Pattern, Ultra Strong Quick Seal Closure, EnveGuard, Size 4-1/8 x 9-1/2", White, 24LB, 500 Count(34010)

#10 Self Seal Security Tinted Envelopes, Size 4-1/8 x 9-1/2 Inches, White Envelopes, 24 LB Paper, Strip and Seal for Privacy & Business, NO Window, 600 Count

An Easy Guide to Making Your Own Origami Envelopes