Best Value
Mead #10 Envelopes, Security Printed Lining for Privacy, Press-It Seal-It Self Adhesive Closure, All-Purpose 20-lb Paper, 4-1/8" x 9-1/2", White, 45/Box (75026)
Mead
Quality Park #6 3/4 Self-Seal Security Envelopes, Security Tint and Pattern, Redi-Strip Closure, 24-lb White Wove, 3-5/8 x 6-1/2, 100/Box (QUA10417) (Pack of 1)
Quality Park
Amazon Basics #6 3/4 Security Tinted Envelopes with Peel & Seal, 100-Pack, White
Amazon Basics
10% off
#10 Security Self-Seal Envelopes, Windowless Design, Premium Security Tint Pattern, Ultra Strong Quick-Seal Closure - EnveGuard - Size 4-1/8 x 9-1/2 Inches - White - 24 LB - 500 Count (34010)
Aimoh