Skip to main content Skip to footer
How Rewards Work
$10 off when you spend $100
Save 5% with Rewards+
Shop all
Welcome, sign in
Create account Orders
Upgrade to Rewards+
Rewards & coupons
Hot Deals Quill's House Brands
Track an order
Shared cart
Reward not redeemed
You dont have enough points to redeem this reward.
Shopping list
Alternative Items
Add a protection plan


Home
>
Shipping, Packing & Mailing Supplies
>
Bulk Envelopes
>
Invitation Envelopes
>
Square Envelopes

Shop Square Envelopes

   (293 Products)
Filter by:
Clear
JAM Paper (152)
LUX (141)
Clear
2 11/16" x 3 11/16" (6)
3 1/4" x 3 1/4" (2)
4 1/8" x 9 1/2" (5)
4 3/4" x 6 1/2" (12)
4 3/8" x 5 3/4" (13)
5 1/2" x 5 1/2" (22)
5 1/2" x 8 1/8" (2)
5 1/4" x 7 1/4" (21)
5 3/4" x 8 3/4" (19)
5" x 5" (18)
5" x 11 1/2" (1)
6 1/2" x 6 1/2" (13)
6 1/4" x 6 1/4" (12)
6" x 6" (22)
6" x 9 1/2" (3)
7 1/2" x 7 1/2" (10)
Other (106)
Clear
25 Per Pack (51)
50 Per Pack (91)
500 Per Pack (60)
100 Per Pack (17)
250 Per Pack (38)
1000 Per Pack (28)
Go
$0 - $10 (4)
$10 - $20 (59)
$20 - $30 (50)
$30 - $40 (26)
$40 - $50 (25)
$50 - $60 (15)
$60 - $70 (14)
$70 - $80 (14)
$80 - $90 (9)
$90 - $100 (8)
$100 - $150 (35)
$150 - $200 (16)
$200 - $300 (12)
$300 - $400 (3)
$400 - $500 (1)
$750 - $1000 (2)
Clear
White (122)
Black (24)
Brown (18)
Gray/Silver (13)
Blue (11)
Gold (7)
Multicolor (1)
Clear (21)
Red (15)
Beige (11)
Green (9)
Pink (9)
Yellow (8)
Ivory (2)
Purple (2)
Metallic (1)
Natural (1)
Natural Kraft (1)
All filters
Sort by:
Best matchPrice: High-LowPrice: Low-HighRating: High-Low
All filters 293 items found
JAM Paper 10.5 x 10.5 Square Invitation Envelopes, White, 100/Pack (03992320B)JAM Paper 10.5 x 10.5 Square Invitation Envelopes, White, 100/Pack (03992320B)
Quick view
JAM Paper 10.5" x 10.5" Square Invitation Envelopes, White, 100/Pack (03992320B)
Item #:901-261330JAM
$64.99
Per box
($0.65/Envelope)
Earn 64 points
Free delivery
Add
JAM Paper® 10 x 10 Large Square Invitation Envelopes, White, 100/Pack (03992319B)JAM Paper® 10 x 10 Large Square Invitation Envelopes, White, 100/Pack (03992319B)
Quick view
JAM Paper® 10 x 10 Large Square Invitation Envelopes, White, 100/Pack (03992319B)
Item #:901-261329JAM
5
(1)
$72.59
Per box
($0.73/Envelope)
Earn 72 points
Free delivery
Add
JAM Paper® 3.125 x 3.125 Mini Square Envelopes, White, 25/Pack (3992308)JAM Paper® 3.125 x 3.125 Mini Square Envelopes, White, 25/Pack (3992308)
Quick view
JAM Paper® 3.125 x 3.125 Mini Square Envelopes, White, 25/Pack (3992308)
Item #:901-261294JAM
$7.99
Per pack
($0.32/Envelope)
Earn 7 points
Free delivery w/ $25+
Add
JAM Paper 6 x 6 Square Foil Lined Invitation Envelopes, White with Silver Foil, 25/Pack (3244688)JAM Paper 6 x 6 Square Foil Lined Invitation Envelopes, White with Silver Foil, 25/Pack (3244688)
Quick view
JAM Paper 6 x 6 Square Foil Lined Invitation Envelopes, White with Silver Foil, 25/Pack (3244688)
Item #:901-262778JAM
$14.99
Per pack
($0.60/Envelope)
Earn 14 points
Free delivery w/ $25+
Add
JAM Paper 3.125 x 3.125 Mini Square Invitation Envelopes, Black Linen, 25/Pack (V01200)JAM Paper 3.125 x 3.125 Mini Square Invitation Envelopes, Black Linen, 25/Pack (V01200)
Quick view
JAM Paper 3.125 x 3.125 Mini Square Invitation Envelopes, Black Linen, 25/Pack (V01200)
Item #:901-261566JAM
1
(1)
$14.99
Per pack
($0.60/Envelope)
Earn 14 points
Free delivery w/ $25+
Add
LUX® 60lb 4 3/8x5 3/4 Square Flap Envelopes W/Peel&Press; White W/Gold LUX, 500/BX
Quick view
LUX® 60lb 4 3/8"x5 3/4" Square Flap Envelopes W/Peel&Press; White W/Gold LUX, 500/BX
Item #:901-513838LUX
$85.99
Per box
($0.17/Envelope)
Earn 85 points
Free delivery
Add
JAM Paper 6 x 6 Square Invitation Envelopes, White, 50/Pack (28416I)JAM Paper 6 x 6 Square Invitation Envelopes, White, 50/Pack (28416I)
Quick view
JAM Paper 6 x 6 Square Invitation Envelopes, White, 50/Pack (28416I)
Item #:901-1588509JAM
5
(4)
$30.99
Per pack
($0.62/EACH)
Earn 30 points
Free delivery
Add
JAM Paper 9 x 9 Square Invitation Envelopes, White, 50/Pack (4232I)JAM Paper 9 x 9 Square Invitation Envelopes, White, 50/Pack (4232I)
Quick view
JAM Paper 9 x 9 Square Invitation Envelopes, White, 50/Pack (4232I)
Item #:901-1588501JAM
5
(2)
$27.99
Per pack
($0.56/Envelope)
Earn 27 points
Free delivery
Add
LUX® 28lb 5x5 Square Flap Envelopes w/ Peel & Press, Bright White, 500/Box (10894-500)
Quick view
LUX® 28lb 5"x5" Square Flap Envelopes w/ Peel & Press, Bright White, 500/Box (10894-500)
Item #:901-516620LUX
1
(1)
$72.99
Per box
($0.15/Envelope)
Earn 72 points
Free delivery
Add
JAM Paper 5.5 x 5.5 Square Invitation Envelopes, White, Bulk 250/Box (28415H)JAM Paper 5.5 x 5.5 Square Invitation Envelopes, White, Bulk 250/Box (28415H)
Quick view
JAM Paper 5.5 x 5.5 Square Invitation Envelopes, White, Bulk 250/Box (28415H)
Item #:901-1589847JAM
5
(1)
$120.99
Per pack
($0.48/Envelope)
Earn 120 points
Free delivery
Add
LUX 5 x 5 Square Envelopes, 50/Box, Navy (LUX-8505-103-50)
Quick view
LUX 5 x 5 Square Envelopes, 50/Box, Navy (LUX-8505-103-50)
Item #:901-282165LUX
$13.99
Per pack
($0.28/Envelope)
Earn 13 points
Free delivery w/ $25+
Add
LUX® 80lb 5 3/4x8 3/4 Square Flap Metallic Envelopes W/Peel&Press; Silver, 500/BX
Quick view
LUX® 80lb 5 3/4"x8 3/4" Square Flap Metallic Envelopes W/Peel&Press; Silver, 500/BX
Item #:901-515385LUX
$179.89
Per box
($0.36/Envelope)
Earn 179 points
Free delivery
Add
LUX 5 3/4 x 8 3/4 60lbs. Square Flap Envelopes W/Peel & Press, White/Silver LUX Lining
Quick view
LUX 5 3/4" x 8 3/4" 60lbs. Square Flap Envelopes W/Peel & Press, White/Silver LUX Lining
Item #:901-282958LUX
5
(1)
$22.09
Per pack
($0.44/Envelope)
Earn 22 points
Free delivery w/ $25+
Add
JAM Paper 8 x 8 Square Invitation Envelopes, White, 25/Pack (3992315)JAM Paper 8 x 8 Square Invitation Envelopes, White, 25/Pack (3992315)
Quick view
JAM Paper 8 x 8 Square Invitation Envelopes, White, 25/Pack (3992315)
Item #:901-261306JAM
3
(2)
$18.99
Per pack
($0.76/Envelope)
Earn 18 points
Free delivery w/ $25+
Add
JAM Paper® 3.125 x 3.125 Mini Square Envelopes, White, 100/Pack (03992308B)JAM Paper® 3.125 x 3.125 Mini Square Envelopes, White, 100/Pack (03992308B)
Quick view
JAM Paper® 3.125 x 3.125 Mini Square Envelopes, White, 100/Pack (03992308B)
Item #:901-261315JAM
$27.99
Per pack
($0.28/Envelope)
Earn 27 points
Free delivery
Add
JAM Paper 8.5 x 8.5 Square Strathmore Invitation Envelopes, Bright White Wove, 50/Pack (900858534i)JAM Paper 8.5 x 8.5 Square Strathmore Invitation Envelopes, Bright White Wove, 50/Pack (900858534i)
Quick view
JAM Paper 8.5 x 8.5 Square Strathmore Invitation Envelopes, Bright White Wove, 50/Pack (900858534i)
Item #:901-24006146
$49.99
Per pack
($1.00/Envelope)
Earn 49 points
Free delivery
Add
JAM Paper 6 x 6 Square Foil Lined Invitation Envelopes, White with Gold Foil, 25/Pack (3244689)JAM Paper 6 x 6 Square Foil Lined Invitation Envelopes, White with Gold Foil, 25/Pack (3244689)
Quick view
JAM Paper 6 x 6 Square Foil Lined Invitation Envelopes, White with Gold Foil, 25/Pack (3244689)
Item #:901-262779JAM
5
(2)
$14.99
Per pack
($0.60/Envelope)
Earn 14 points
Free delivery w/ $25+
Add
LUX® 80lb 5 3/4x8 3/4 Square Flap Metallic Envelopes W/Peel&Press; Gold, 500/BX
Quick view
LUX® 80lb 5 3/4"x8 3/4" Square Flap Metallic Envelopes W/Peel&Press; Gold, 500/BX
Item #:901-514889LUX
$179.89
Per box
($0.36/Envelope)
Earn 179 points
Free delivery
Add
LUX® 60lb 4 3/8x5 3/4 Square Flap Envelopes W/Peel&Press; White, 500/BX
Quick view
LUX® 60lb 4 3/8"x5 3/4" Square Flap Envelopes W/Peel&Press; White, 500/BX
Item #:901-516326LUX
$64.69
Per box
($0.13/Envelope)
Earn 64 points
Free delivery
Add
JAM Paper 8 x 8 Square Invitation Envelopes, White, 50/Pack (3992315I)JAM Paper 8 x 8 Square Invitation Envelopes, White, 50/Pack (3992315I)
Quick view
JAM Paper 8 x 8 Square Invitation Envelopes, White, 50/Pack (3992315I)
Item #:901-1588505JAM
5
(1)
$27.99
Per pack
($0.56/Envelope)
Earn 27 points
Free delivery
Add
JAM Paper 10 x 10 Large Square Invitation Envelopes, White, 25/Pack (3992319)JAM Paper 10 x 10 Large Square Invitation Envelopes, White, 25/Pack (3992319)
Quick view
JAM Paper 10 x 10 Large Square Invitation Envelopes, White, 25/Pack (3992319)
Item #:901-261308JAM
$26.29
Per pack
($1.05/Envelope)
Earn 26 points
Free delivery
Add
JAM Paper 3.125 x 3.125 Kraft Square Recycled Invitation Envelopes, Brown Kraft Paper Bag, 50/Pack (52797687i)JAM Paper 3.125 x 3.125 Kraft Square Recycled Invitation Envelopes, Brown Kraft Paper Bag, 50/Pack (52797687i)
Quick view
JAM Paper 3.125 x 3.125 Kraft Square Recycled Invitation Envelopes, Brown Kraft Paper Bag, 50/Pack (52797687i)
Item #:901-2478070
5
(1)
$27.99
Per pack
($0.56/Envelope)
Earn 27 points
Free delivery
Add
JAM Paper 9.5 x 9.5 Square Invitation Envelopes, White, 25/Pack (4233)JAM Paper 9.5 x 9.5 Square Invitation Envelopes, White, 25/Pack (4233)
Quick view
JAM Paper 9.5 x 9.5 Square Invitation Envelopes, White, 25/Pack (4233)
Item #:901-261307JAM
1
(1)
$18.99
Per pack
($0.76/Envelope)
Earn 18 points
Free delivery w/ $25+
Add
LUX® 70lb 5 1/4x7 1/4 Square Flap Envelopes W/Peel&Press; Grocery Bag Brown, 1000/BX
Quick view
LUX® 70lb 5 1/4"x7 1/4" Square Flap Envelopes W/Peel&Press; Grocery Bag Brown, 1000/BX
Item #:901-516143LUX
$138.19
Per box
($0.14/Envelope)
Earn 138 points
Free delivery
Add
1 23 ... 13
Displaying 1-24 of 293
house icon

Quill's House Brands

Business essentials you trust, savings you'll love.

Shop Quill brand Shop Coastwide brand Shop Pick Me Up brand Shop Perk brand Shop Staples brand Shop Staples tech Shop Union & Scale brand Shop Workplace 2.0 brand
Trustpilot logo Trustpilot rating 4.5 out of 5

Quill help center

Call us 1-800-982-3400

New to Quill? Would you like to learn more about how we can help your business?

Start a chat.
Email us.
Looking for coupons?
You will be redirected to travel.quill.com in a new tab. Hit Okay to continue.
Okay
Go to Cart
Subtotal: ( items / rewards):
Rewards balance:
Rewards & coupons center
Loading your cart
Quick view
Shared Cart Details
Please review this product
Upgrade to Rewards+
$49.99/year
Member benefits
$41.99 Quill 10-Ream Copy Paper
Up to 4 cartons per month
10% in QUILLCASH Rewards on ink & toner
View policy
$15 off monthly coupon
Always free shipping
View policy
Earn 10% more points + more time to use
5% off everday prices
10% off discount on in-house brands
Member exclusive rewards
Site-wide price match guarantee
View policy
Disclaimer
Offers and discounts exclude HP,Samsung and Epson. We offer a worry-free enrollment guarantee - if you are not satisfied with your Rewards+ membership, you can cancel at any time for a prorated refund. By enrolling into the Reward+ program, you are agreeing to the Terms and Conditions.
See full membership details