#10 Double Window Envelopes - 500 Self Seal Security Envelopes For Business Mail & Invoices

If you send out business mail regularly, these Blue Summit Supplies #10 double window envelopes will make your life so much easier!

The package comes with 500 envelopes, which should last most small businesses quite a while.

The double window design is perfect for invoices, statements, and QuickBooks mailings - your return address and customer address show through perfectly without needing to print directly on the envelope.

They're made from durable 24lb white wove paper that feels substantial and professional, not flimsy like some cheaper envelopes.

The self-seal feature is fantastic - just peel off the backing and press to seal, no licking or moisture required.

The security tint inside is dark enough to keep your contents private and secure during mailing.

I've used these for my small business for several months now, and they've held up perfectly through the mailing process with no tears or issues.

They're sized at 4 1/8 x 9 1/2 inches, which is the standard #10 size that fits folded letter paper perfectly.

You can even fit smaller return envelopes inside if needed.

They've saved me so much time compared to printing labels or addressing envelopes manually.

The professional appearance makes our business communications look polished and put-together.

If you're tired of dealing with envelope glue or worried about your mail privacy, these self-seal security envelopes are absolutely worth the investment.

They're one of those office supplies that just work exactly as they should without any fuss!