Square Envelopes | Square Invitation Envelopes in Many Sizes

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Order Square Envelopes and get FREE shipping! Square envelopes are offered in ivory, white, black, translucent, and Bag Kraft, in a variety of sizes. Square envelopes are unique and will surely impress your guests. White and natural are perfect for a traditional wedding, shower, or any special occasion. The Kraft square envelopes are ideal for a more rustic themed wedding or event. Choose transparent square envelopes to offer a preview of your invitation through the envelope.

Square envelopes are available in a wide variety of sizes, including 5, 5 1/2, 5 3/4, 6, 6 1/2, 7 1/2, 8 1/2, and 9-inch varieties. Looking to create a truly unique envelope? We have the ability to print your custom designs, artwork, return and mailing addresses, and more. Simply select the size you need, then choose the Printed option to customize your square envelopes. All square envelopes feature a standard gum seal that requires moisture to close.

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Square 5x5 Envelopes

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Square 5 1/2 x 5 1/2 Envelopes

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Square 5 3/4 x 5 3/4 Envelopes

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Square 6 x 6 Envelopes

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Square 6 1/2 x 6 1/2 Envelopes

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Square 7 1/2 x 7 1/2 Envelopes

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Square 8 1/2 x 8 1/2 Envelopes

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Square 9 x 9 Envelopes

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Invitation Envelopes

We offer a wide selection of Invitation Envelopes in a variety of sizes, styles, and colors. Choose from many popular sizes ranging from A1 to A10, in white, natural, pastel or bright colors. Shop Invitation Envelopes.

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Custom Invitation Envelopes

Need to personalize your invitation envelopes? We offer a variety of printing services to create something truly special for your event. Add return or mailing addresses with custom artwork or designs. Save time by pre-printing event information or addresses. Shop Custom Invitation Envelopes.

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Not finding what you need? Have a question about a printed order? We would love to see if we can make your order - and life - a little bit easier.

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Square Envelopes Size Guidelines

Not sure what size you need? Our guide can help you pick the right square invitation envelopes. As a general rule of thumb, you will want to select an envelope slightly larger than your insert, to make it easy to add and remove your item. Depending on the thickness of your insert, you may need more or less room around the item.

Square Envelopes -- Unique envelopes sized for popular square invitations.

  • 5 x 5 - Comfortably fits a card or invitation up to 4 3/4 x 4 3/4.
  • 5.5 x 5.5 - Comfortably fits a card or invitation up to 5 1/4 x 5 1/4.
  • 5.75 x 5.75 - Comfortably fits a card or invitation up to 5 1/2 x 5 1/2.
  • 6x6 - Comfortably fits a card or invitation up to 5 3/4 x 5 3/4.
  • 6.5 x 6.5 - Comfortably fits a card or invitation up to 6 1/4 x 6 1/4.
  • 7.5 x 7.5 - Comfortably fits a card or invitation up to 7 1/4 x 7 1/4.
  • 8.5 x 8.5 - Comfortably fits a card or invitation up to 8 1/4 x 8 1/4.
  • 9x9 - Comfortably fits a card or invitation up to 8 3/4 x 8 3/4.

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