Flat Mailing Envelopes

155 results
LUX 6 x 9 Booklet Envelopes (6 x 9) - White, Inkjet - Pack of 250 (2444799) image 1
Item: 2444799
Model: 4820-32IJ-250

When you can't or shouldn't fold the contents, here's the professional way to send flat but bulky materials- pamphlets, brochures, sales literature, booklets, annual reports, magazines, or catalogs. The flap, usually rectangular in shape, is on the long side for easier filling. 16 sizes in kraft, white and an array of colors to suit your style. Available with moistenable flap, some with self-stick Peel & Seal. Also see our Open End selection..6 x 9 Booklet Envelopes are perfect for sending documents/catalogs/direct mail/promotional material/brochures.Comes in White, Inkjet, 80lb. Text Paper.Dimensions: 6"H x 9"W.Moistenable Glue Sealing Method.Contains 250 Envelopes per pack.Comes in White, Inkjet, 80lb. Text Paper.80lb. White, Inkjet.LUX 80lb. White, Inkjet 6 x 9 Booklet Envelopes are perfect for sending documents, catalogs, direct mail, promotional material, brochures and more.

Price is  $142.39
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Quality Park Self Seal A2 Invitation Envelope 4 3/8" x 5 3/4", White, 100/Box (QUA10740) image 1
Item: 582032
Model: QUA10740

Give greeting cards and invites a polished, professional look with these white invitation envelopes. A crisp white color offers a neutral background for address labels and postage, while the 24-pound white-wove stock makes these Quality Park envelopes sturdy enough to withstand frequent handling..Invitation envelope keeps your documents flat in the mail.Envelope size: 5 3/4"W x 4 3/8"H.Self-seal closure for easy sealing.Flap & adhesive method: adhesive strip.White and made of paper.100 envelopes per box.Great to use to store items such as photographs, greetings, invitations, and wedding invitations.Send out invites, RSVPs, and greeting cards with these Quality Park white invitation envelopes.

Price is  $25.59
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Partners Tyvek Envelopes, 9" x 12", Silver, 100/Case (TYC912S) image 1
Item: 2301093
Model: TYC912S

9" x 12" Silver Tyvek Envelopes. Tyvek envelopes provide superior puncture, tear and moisture protection. Colorful envelopes make your mailing stand out. Constructed from 14 lb. olefin. Ten times stronger than paper envelopes. Feature self-seal closure..Tyvek Envelopes useful for shipping flat items such as documents or catalogs.Silver Tyvek constructed from 14 lb. olefin..9" x 12".Features a self-seal closure strip.100 Envelopes per Case.Colorful envelopes make your mailing stand out..Ten times stronger than paper envelopes..Tyvek envelopes provide superior puncture, tear and moisture protection.

Price is  $214.99
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Partners Tyvek Envelopes, 10" x 13", Yellow, 100/Case (TYC1013Y) image 1
Item: 2301045
Model: TYC1013Y

10" x 13" Yellow Tyvek Envelopes. Tyvek envelopes provide superior puncture, tear and moisture protection. Colorful envelopes make your mailing stand out. Constructed from 14 lb. olefin. Ten times stronger than paper envelopes. Feature self-seal closure..Tyvek Envelopes useful for shipping flat items such as documents or catalogs.Yellow Tyvek constructed from 14 lb. olefin..10" x 13".Features a self-seal closure strip.100 Envelopes per Case.Colorful envelopes make your mailing stand out..Ten times stronger than paper envelopes..Tyvek envelopes provide superior puncture, tear and moisture protection.

Price is  $223.29
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Partners Tyvek Envelopes, 10" x 13", Green, 100/Case (TYC1013G) image 1
Item: 2301086
Model: TYC1013G

10" x 13" Green Tyvek Envelopes. Tyvek envelopes provide superior puncture, tear and moisture protection. Colorful envelopes make your mailing stand out. Constructed from 14 lb. olefin. Ten times stronger than paper envelopes. Feature self-seal closure..Tyvek Envelopes useful for shipping flat items such as documents or catalogs.Green Tyvek constructed from 14 lb. olefin..10" x 13".Features a self-seal closure strip.100 Envelopes per Case.Colorful envelopes make your mailing stand out..Ten times stronger than paper envelopes..Tyvek envelopes provide superior puncture, tear and moisture protection.

Price is  $133.99
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Quality Park Gummed Booklet Envelopes, 9" x 12", White Wove, 250/Box (QUA37682) image 1
Item: 378384
Model: QUA37682

Take care of business correspondence and document storage with these booklet envelopes. These envelopes measure 9 x 12 inches and are made from 28-pound, 84-brightness paper stock for durability and high-contrast labeling. These Quality Park side-opening envelopes have a wide, gummed flap to achieve a secure seal perfect for either personal or professional use..Booklet envelopes keep your documents flat in the mail.Envelope size: 9"H x 12"W.The gummed-flap closure keeps your documents secured inside the envelope.Wallet flap.White wove and made of paper.250 envelopes per box.Store and ship paperwork easily by using these Quality Park side-opening white envelopes.

Price is  $67.79
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Partners Tyvek Partners Brand Envelopes, 12" x 15 1/2", Red, 100/Case (TYC1215R) image 1
Item: 2301099
Model: TYC1215R

12" x 15 1/2" Red Tyvek Envelopes. Tyvek envelopes provide superior puncture, tear and moisture protection. Colorful envelopes make your mailing stand out. Constructed from 14 lb. olefin. Ten times stronger than paper envelopes. Feature self-seal closure..Tyvek Envelopes useful for shipping flat items such as documents or catalogs.Red Tyvek constructed from 14 lb. olefin..12" x 15 1/2".Features a self-seal closure strip.100 Envelopes per Case.Colorful envelopes make your mailing stand out..Ten times stronger than paper envelopes..Tyvek envelopes provide superior puncture, tear and moisture protection.

Price is  $190.39
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Quality Park Gummed Booklet Envelopes, 6" x 9", White Wove, 100/Box (QUA37113) image 1
Item: 813372
Model: QUA37113

Protect mail while in transit with these booklet envelopes. The 24-pound stock gives a professional look and feel, and the gummed flap helps ensure contents stay secure. These Quality Park white booklet envelopes come with 100 in each box and open along the side, making it easy to add and remove papers..Side-opening booklet envelopes keep your documents flat in the mail.Envelope size: 6"H x 9"W.Wallet flap and gummed closure keep your documents secured inside the envelope.Made of white wove paper.100 envelopes per box.Made in the USA.Send out mass mailings with this box of 100 Quality Park 6 x 9-inch deeply gummed open-side 24-pound white wove booklet envelopes.

Price is  $58.49
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 1000/Box, Garnet (EX4865-26-1000) image 1
Item: 386422
Model: EX4865-26-1000

LUX® A1 Envelope in garnet color has moistenable glue flap on short side helps that hold things from falling out when opened. Envelope of size 3 5/8" x 5 1/8" has a paper weight of 70 lbs and is sold as 1000 per box..A1 Invitation Envelopes (3 5/8 x 5 1/8) are perfect for party invites/thank you cards/wedding invites/announcements.Comes in Garnet, 80lb. Text Paper.Peel & Press Sealing Method.Garnet.Closure: Moistenable glue.Opening: Square flap.Material: Paper.Collection name: Exclusive.For those occasions calling for a dainty announcement envelope.Your ideal choice - this diminutive envelope is the smallest of its kind allowed through the mail.Social and invitation-type envelope.Its dimensions make it the most common-sized envelope used for RSVP and announcement purposes.LUX® A1 Envelope in garnet color measuring 3 5/8" x 5 1/8" is used for sending flat, heavy materials or many small items like coins, catalogs and jumbo cards, sold as 1000 per box.

Price is  $148.25
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LUX Moistenable Glue #10 Window Envelope, 4 1/2" x 9 1/2", Electric Yellow, 50/Pack (4261-20-50) image 1
Item: 281895
Model: EX7716-12-50

Lux Size 10 open end envelope in sunflower color features a moistenable glue flap for safe sealing. Envelope measuring 4 1/8" x 9 1/2" with 70 lbs paper weight is compatible with laser printer and is sold as 50 per pack..Perfectly sized to send flat, heavy materials, numerous small items like coins.Peel-and-press closure provides a simple, secure closure.Made of 80-lb paper stock.Lux Size 10 open end envelope measures 4 1/8" x 9 1/2", is perfectly sized to send flat, heavy materials, numerous small items like coins, catalogs or jumbo cards and comes in sunflower color.

Price is  $72.99
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LUX Full Face Window Envelopes, 10" x 13", Bright White, 500/Box (FFW-1013-500) image 1
Item: 387860
Model: FFW-1013-500

When sending letters, invoices or statements, save the time and expense of separately addressing envelopes. Simply position the address to show through the window, or choose our full-face windows, which are large enough to show off the entire contents..10 x 13 Full face window envelopes are perfect for sending letters, invoices, statements.When sending letters, invoices or statements, save the time and expense of separately addressing envelopes.Simply position the address to show through the window, or choose our full-face windows, which are large enough to show off the entire contents.Available in a variety of styles and colors, printed or plain.Centered on face window.Moisture seal.LUX bright white full face envelope measuring 10" x 13" has a paper weight of 28 lbs and is suitable for handing out or sending flat and bulky items, sold as 500 per box.

Price is  $443.99
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About Flat Mailing Envelopes

Flat mailing envelopes are essential for securely sending documents, photos, and other flat items through the mail. Their design ensures that contents remain protected during transit, making them a reliable choice for both personal and professional use.

Available in various sizes and materials, flat mailing envelopes cater to diverse mailing needs. Whether for everyday correspondence or important business documents, these envelopes provide a practical solution for efficient shipping and organization.

When selecting flat mailing envelopes, consider features such as durability, moisture resistance, and closure type. Options with self-sealing flaps offer convenience, while reinforced edges provide added strength for heavier contents.

Additionally, choosing envelopes with a professional finish can enhance the presentation of your mailings. Look for options that are lightweight yet sturdy, ensuring that your documents arrive in pristine condition without incurring extra postage costs.