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10 Best close envelopes of 2026
Explore top picks
Best Choice1
STAPLES9.9Exceptional
Staples 9 x 12 Brown Clasp Close Catalog Envelopes, Heavyweight Kraft Mailers with Metal Clasp, 500/Carton
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Value for Money2
Aimoh9.8Exceptional
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)
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product dimensions: 11.5 x 10 x 4.25 inches
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sheet size: 4.125-x-9.5-inch
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color: Self-Seal
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shape: Rectangular
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item weight: 6.85 pounds
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3
Top Flight9.7Exceptional
Top Flight PSTF10NWT #10 Envelopes, Strip & Seal, Security Tinted, White Paper, 24 lb, 500 Count
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product dimensions: 11.8 x 10 x 4.3 inches
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sheet size: 24
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color: White
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shape: Rectangular
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item weight: 6 pounds
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4
Splendoress9.6Exceptional
#10 Envelopes Letter Size Self Seal | 500 Business Mailing Security Peel and Sealing Envelope | 100% Tinted | no 10 White Windowless Legal Regular Plain Envelops Pack | 4-1/8 x 9-1/2 Inches | 24 LB
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product dimensions: 11.5 x 10 x 4.25 inches
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sheet size: 4.125-x-9.5-inch Inches
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color: White Wove
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shape: Rectangular
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item weight: 6.06 pounds
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5
Amazon Basics9.3Excellent
Amazon Basics #10 Security-Tinted Self-Seal Business Envelopes for Documents, Privacy, Home & Office, White, 500-Pack
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product dimensions: 12.2 x 9.9 x 4.13 inches
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sheet size:N/A
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color: Tint
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shape: Rectangular
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item weight: 6.47 pounds
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6
HERKKA9.0Excellent
HERKKA #10 Security Self-Seal Envelopes, No.10 Windowless Bussiness Envelopes, Security Tinted with Printer Friendly Design - Size 4-1/8 x 9-1/2 Inch - White - 24 LB - 500 Pack
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product dimensions: 9.5 x 4.13 x 0.04 inches
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sheet size:N/A
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color: Blue
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shape: Rectangular
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item weight: 6.7 pounds
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7
Mead8.9Very Good
Mead #6-3/4 Envelopes, 3-5/8" x 6-1/2", Security Printed Lining for Privacy, Press-It Seal-It Self Adhesive Closure, White All-Purpose 20-lb Paper Mailing Envelopes, 500 Count (742021)
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product dimensions:6.5 x 3.63 x 0.04 inches
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sheet size:N/A
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color:White
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shape:Rectangular
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item weight:3.21 pounds
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8
Amazon Basics8.7Very Good
Amazon Basics Clasp Kraft Envelopes for Documents, Gummed Mailing Envelope, 9" x 12", 100-Pack
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product dimensions:12 x 9 x 0.01 inches
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color:Kraft
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shape:Rectangular
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item weight:0.56 ounces
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item model number:AMZ37890
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9
Columbian8.6Very Good
Columbian #10 Security Envelopes, 500 Pack, Self Seal Envelopes for Home, School, and Business Mailings, No Window, 4-1/8 x 9-1/2 Inches, Durable 24 lb White Paper
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product dimensions: 9.5 x 4.13 x 0.04 inches
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sheet size:N/A
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color: White
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shape: Rectangular
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item weight: 6.34 pounds
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10
SUNEE8.5Good
SUNEE #10 Security-Tinted Self Seal Envelopes – 500 Pack White Windowless Mailing Envelopes, 24LB Printer Friendly for Business, Home & Office Use (4-1/8 x 9-1/2")
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