Aimoh 34300 #6 3/4 Security Envelopes, Self-Seal, No Window, 300 Count

When a mailing needs to conceal its contents, an opaque, security-tinted envelope serves a different purpose than a windowed option designed to display an address. The Aimoh 34300 is a compact, windowless #6 3/4 envelope for checks, letters, and other small items, with a self-seal closure for everyday mailing.

The pack contains 300 white paper envelopes measuring 3-5/8 x 6-1/2 inches. That specific format is worth noting: buyers’ opinions on size are mixed, with some finding it just right and others saying it was smaller than expected.

Pros

The security tint is intended to help obscure what is inside, while the windowless front keeps the envelope simple to address without relying on a display window. Its self-seal strip closes without licking, which may be useful when preparing several envelopes at once. The paper is listed as 24 lb, and the manufacturer describes it as printer-compatible, those details may matter for routine home-office mailing.

Buyer feedback is generally favorable about the adhesive, opacity, and usefulness for mailing. Some also describe the envelopes as sturdy. These are customer impressions rather than a guarantee of how an envelope will perform with every printer or mailing setup.

Key points

The #6 3/4 size measures 3-5/8 x 6-1/2 inches, and the pack includes 300 envelopes. The product is listed for letters and personal mailing, including checks. Since the size is compact, it makes more sense for small contents than for bulky documents or larger mailings. If you usually choose envelopes with windows to show a printed address, this windowless design takes a different approach: the address is written or printed on the front.

The Quick-Seal closure and security tint are the main practical distinctions here. It’s a great fit if you want a batch of small, plain envelopes with a closure that does not require moisture. You may want to skip it if your mail routinely needs a larger format, the listed dimensions are the clearest guide to whether your contents will fit.

Getting the most from it

Match the envelope dimensions to the item before preparing a batch, especially if the contents have extra thickness or need room to move. For standard small letters or checks, the listed use and size provide a straightforward starting point. The white, windowless front also suits mail that needs a manually positioned address rather than a window aligned with an insert.

The 300-count pack is geared toward recurring personal or home-office mailing rather than someone who only needs a few envelopes. If printing addresses, the manufacturer states that the paper is printer-compatible, but the listing does not specify printer models or feed settings. Check your printer’s envelope guidance before loading a large quantity.

Questions before you buy

Does this pack include window envelopes? No. These are windowless, so the address needs to appear on the outside of the envelope.

How does the closure work? The envelopes use a self-seal adhesive strip, so closure does not require licking.

What size are they? Each envelope measures 3-5/8 x 6-1/2 inches. Customer feedback on the size is mixed, so compare those measurements with your intended contents.

Final verdict

The Aimoh 34300 is a practical choice for people mailing small letters or checks who want a windowless envelope with a security tint and self-seal closure. Its 300-count pack suits repeated use, while the fixed #6 3/4 dimensions make size the deciding factor. Choose it when those measurements match your contents, look for a larger format if they do not.