This site has limited support for your browser. We recommend switching to Edge, Chrome, Safari, or Firefox.

Free Shipping for orders over $99.

files/0200ps_12_15.jpg

Square Peel & Seal White 28# Envelopes 9 1/2 x 9 1/2 Box of 250

Product Code: 0240PS
$46.75 $56.10
Description

A square envelope always enhances a mailing and with the one of the largest ranges in North America, this gives infinite opportunities for provocative direct mail.

Order before 12pm for same day shipping

Or, take advantage of these options:

Square Peel & Seal White 28# Envelopes 9 1/2 x 9 1/2 Box of 250

$46.75
Frequently Asked Questions

What size card fits inside a 9 1/2 x 9 1/2 square envelope?

These large 9.5 x 9.5 square envelopes are perfectly sized for inserts up to 9.25 inches, providing a minimal, elegant border. They are commonly used for oversized invitations, creative square brochures, and high-impact marketing pieces that require a bold, unique, and symmetrical presentation.

Do 9.5 inch square envelopes require extra postage?

Yes. Square envelopes are classified as non-machinable by most postal services because their non-rectangular shape prevents automated sorting. This almost always incurs an additional postage surcharge. Always check current postal regulations for 9 1/2 square envelopes before mailing in bulk to avoid unexpected fees.

Why choose large square envelopes for direct marketing campaigns?

Square promotional mailers immediately stand out in a stack of standard rectangular mail, significantly increasing open rates and recipient engagement. Their unique, large format signals importance and creativity, making them the superior choice for high-impact direct mail and premium brand mailings.

What are the advantages of Peel and Seal closures on square envelopes?

Peel and Seal offers the fastest, most secure, and cleanest sealing method, eliminating the need for moisture or messy adhesive. For businesses processing a box of 250 square self-seal envelopes, this feature saves significant time and ensures a strong, tamper-resistant seal, which is crucial for bulk promotional mailers.

Is 28# paper strong enough for large square promotional mail?

Yes. The White 28# paper provides a durable, high-quality, and robust feel that resists tearing and helps maintain the envelope's structure. This specific thickness is well suited for premium marketing inserts, heavier paper stocks, and creative mail pieces that demand reliable support during transit.

Can these 9.5 x 9.5 square envelopes be used for printing?

Absolutely. The uncoated white surface ensures excellent, crisp printability compatible with most laser and inkjet printers. Designers and print shops routinely use these wholesale square envelopes for precise printed logos, return addresses, and personalized event branding that utilizes the full symmetrical area.

Are these square self seal envelopes cost effective for bulk orders?

Yes. Purchasing the Box of 250 square self-seal envelopes provides strong immediate value, and leveraging the available bulk purchase discounts unlocks even greater savings. Buying in volume is the most cost-effective strategy for marketing agencies, event planners, and businesses relying on a consistent supply for large campaigns.

How can I make my large square mailings more memorable?

Since square envelopes inherently command attention, you can maximize impact by pairing them with bold, square-shaped inserts, metallic accents, or custom-printed interior elements. They are the top choice for modern direct mail trends focused on visual impact and creating a distinct, premium experience.

What our customers say

Siobhan Jones

WONDERFUL! We ordered 10,000 envelopes that were printed with 2 designs. the team were fantastic and patient as we had a small design issue, which they helped us through! I would 100% recommend All Colour Envelopes, as the service was professional, the turn around only 5 days and the communication impressive!

Thankyou!

Kelly Donaldson

I searched long and hard for a company that sold the envelopes I needed (which were an unusual size) and 'All Colour Envelopes' were the only company that did them. Their website is very easy to use and the envelopes arrived within a few days. Great service!

Stephen Devaney

Quality of the product is fantastic. Delivery was on time and even early on one. The packaging is brilliant to make sure that the product arrives in perfect condition.

Judith White

I've ordered from All Colour Envelopes a couple of times and the service has been great - nothing was too much trouble.

Jess looked after me both times, sending sample envelopes to make sure that I was sent exactly what I wanted. The orders were put through quickly and delivered on the next working day.

I recommend this company and will use them again.

Caroline Upton

Been using ACE since opening my business. The envelopes are the best I can find, and customer service has always been amazing when I’ve had issues with something. Can’t imagine using anyone else. Don’t get me wrong, I’ve looked on occasions but I always end up ordering from ACE

Josh Webster

Quick at responding and organising a delivery and the envelopes we ordered were high quality with 0 issues!

Jayshri Hirani

Wow wow wow superb 6 star service amazing products great quality and fast delivery my preferred number 1 supplier from now thank you

Cart

Congratulations! Your order qualifies for free shipping You are $99 away from free shipping.

No more products available for purchase

Your Cart is Empty