Skip to main content Skip to footer
Flexible Net 30 payment terms
Business User? Get customized solutions
Save 5% with Rewards+
Rep photo Get expert
service now
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

   (289 Products)
Filter by:
Clear
JAM Paper (148)
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" (12)
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 (103)
Clear
50 Per Pack (91)
500 Per Pack (60)
25 Per Pack (47)
250 Per Pack (38)
1000 Per Pack (28)
100 Per Pack (17)
Go
$0 - $10 (3)
$10 - $20 (55)
$20 - $30 (48)
$30 - $40 (26)
$40 - $50 (27)
$50 - $60 (15)
$60 - $70 (12)
$70 - $80 (16)
$80 - $90 (10)
$90 - $100 (7)
$100 - $150 (33)
$150 - $200 (18)
$200 - $300 (13)
$300 - $400 (3)
$400 - $500 (1)
$750 - $1000 (2)
Clear
White (122)
Clear (20)
Gold (7)
Black (22)
Red (15)
Gray/Silver (13)
Beige (11)
Blue (11)
Green (8)
Yellow (8)
Ivory (2)
Brown (18)
Pink (9)
Purple (2)
Metallic (1)
Multicolor (1)
Natural (1)
Natural Kraft (1)
All filters
Sort by:
Best matchPrice: High-LowPrice: Low-HighRating: High-Low
All filters 289 items found
LUX 13 x 13 Square Envelopes, 50/Box, 28lb. White (WS-5222-50)
Quick view
LUX 13 x 13 Square Envelopes, 50/Box, 28lb. White (WS-5222-50)
Item #:901-2146488LUX
5
(1)
$100.29
Per pack
($2.01/Envelope)
Earn 100 points
Free delivery
Add
LUX® 80lb 4 3/8x5 3/4 Square Flap Metallic Envelopes W/Peel&Press; Gold, 500/BX
Quick view
LUX® 80lb 4 3/8"x5 3/4" Square Flap Metallic Envelopes W/Peel&Press; Gold, 500/BX
Item #:901-515792LUX
$96.49
Per box
($0.19/Envelope)
Earn 96 points
Free delivery
Add
JAM Paper 6 x 6 Square Invitation Envelopes, Dark Grey, 25/Pack (36396439)JAM Paper 6 x 6 Square Invitation Envelopes, Dark Grey, 25/Pack (36396439)
Quick view
JAM Paper 6 x 6 Square Invitation Envelopes, Dark Grey, 25/Pack (36396439)
Item #:901-261454JAM
$30.99
Per pack
($1.24/Envelope)
Earn 30 points
Free delivery
Add
JAM Paper 5.5 x 5.5 Square Invitation Envelopes, White, 25/Pack (28415)JAM Paper 5.5 x 5.5 Square Invitation Envelopes, White, 25/Pack (28415)
Quick view
JAM Paper 5.5 x 5.5 Square Invitation Envelopes, White, 25/Pack (28415)
Item #:901-261298JAM
$20.19
Per pack
($0.81/Envelope)
Earn 20 points
Free delivery w/ $25+
Add
JAM Paper® 7 x 7 Square Invitation Envelopes, White, 25/Pack (28209)
Quick view
JAM Paper® 7 x 7 Square Invitation Envelopes, White, 25/Pack (28209)
Item #:901-261304JAM
$16.89
Per pack
($0.68/Envelope)
Earn 16 points
Free delivery w/ $25+
Add
JAM Paper 2.375 x 2.375 Mini Square Envelopes, White, 100/Pack (03993004B)JAM Paper 2.375 x 2.375 Mini Square Envelopes, White, 100/Pack (03993004B)
Quick view
JAM Paper 2.375 x 2.375 Mini Square Envelopes, White, 100/Pack (03993004B)
Item #:901-261314JAM
3
(1)
$27.99
Per box
($0.28/Envelope)
Earn 27 points
Free delivery
Add
LUX® 80lb 4 3/8x5 3/4 Square Flap Envelopes W/Peel&Press; Citrus Yellow, 500/BX
Quick view
LUX® 80lb 4 3/8"x5 3/4" Square Flap Envelopes W/Peel&Press; Citrus Yellow, 500/BX
Item #:901-513997LUX
$83.39
Per box
($0.17/Envelope)
Earn 83 points
Free delivery
Add
JAM Paper 7 1/2 x 7 1/2 Square Envelopes ,Ruby Red, 250 Pack (EX8555-18-250)
Quick view
JAM Paper 7 1/2 x 7 1/2 Square Envelopes ,Ruby Red, 250 Pack (EX8555-18-250)
Item #:901-24578465
$210.99
Per pack
($0.84/Envelope)
Earn 210 points
Free delivery
Add
Lux® 2 11/16 x 3 11/16 80lbs. Pointed Mini Envelopes W/Glue; Limelight Green, 50/Pk
Quick view
Lux® 2 11/16" x 3 11/16" 80lbs. Pointed Mini Envelopes W/Glue; Limelight Green, 50/Pk
Item #:901-281967LUX
$20.49
Per pack
($0.41/Envelope)
Earn 20 points
Free delivery w/ $25+
Add
JAM PAPER 7.5 x 7.5 Square Invitation Envelopes, Ivory, 100/Pack (23131971)JAM PAPER 7.5 x 7.5 Square Invitation Envelopes, Ivory, 100/Pack (23131971)
Quick view
JAM PAPER 7.5 x 7.5 Square Invitation Envelopes, Ivory, 100/Pack (23131971)
Item #:901-24295249
$52.99
Per pack
($0.05/Envelope)
Earn 52990 points
Free delivery
Add
JAM Paper 5.5 x 5.5 Square Invitation Envelopes, Black Linen, Bulk 250/Box (V01210H)JAM Paper 5.5 x 5.5 Square Invitation Envelopes, Black Linen, Bulk 250/Box (V01210H)
Quick view
JAM Paper 5.5 x 5.5 Square Invitation Envelopes, Black Linen, Bulk 250/Box (V01210H)
Item #:901-1589755JAM
$236.99
Per pack
($0.95/Envelope)
Earn 236 points
Free delivery
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
JAM Paper 7.5 x 7.5 Square Translucent Vellum Invitation Envelopes, Clear, 50/Pack (81981I)
Quick view
JAM Paper 7.5 x 7.5 Square Translucent Vellum Invitation Envelopes, Clear, 50/Pack (81981I)
Item #:901-1589073JAM
$58.99
Per pack
($1.18/Envelope)
Earn 58 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
LUX® 6 x 9 1/2 30lbs. Square Flap Envelopes W/Peel & Press, Clear Translucent, 50/Pack
Quick view
LUX® 6" x 9 1/2" 30lbs. Square Flap Envelopes W/Peel & Press, Clear Translucent, 50/Pack
Item #:901-282415LUX
$23.19
Per pack
($0.46/Envelope)
Earn 23 points
Free delivery w/ $25+
Add
JAM Paper 13 1/2 Square Invitation Envelope, 13 1/2 x 13 1/2, White, 50/Pack (3992323I)JAM Paper 13 1/2 Square Invitation Envelope, 13 1/2 x 13 1/2, White, 50/Pack (3992323I)
Quick view
JAM Paper 13 1/2 Square Invitation Envelope, 13 1/2" x 13 1/2", White, 50/Pack (3992323I)
Item #:901-1588468JAM
5
(1)
$54.99
Per pack
($1.10/Envelope)
Earn 54 points
Free delivery
Add
LUX® 70lb 8x8 Square Flap Envelopes W/Peel&Press; Bright White, 500/BX
Quick view
LUX® 70lb 8"x8" Square Flap Envelopes W/Peel&Press; Bright White, 500/BX
Item #:901-516584LUX
$155.79
Per box
($0.31/Envelope)
Earn 155 points
Free delivery
Add
Lux® 5 3/4 x 8 3/4 100% Recycled 80lbs. Square Flap Envelopes W/Peel & Press; White
Quick view
Lux® 5 3/4" x 8 3/4" 100% Recycled 80lbs. Square Flap Envelopes W/Peel & Press; White
Item #:901-282953LUX
$18.59
Per pack
($0.37/Envelope)
Earn 18 points
Free delivery w/ $25+
Add
80 lb 5 3/4 x 5 3/4 Peel & Press Square Linen Envelopes, White, 50/Pack
Quick view
80 lb 5 3/4" x 5 3/4" Peel & Press Square Linen Envelopes, White, 50/Pack
Item #:901-1029946LUX
$20.09
Per pack
($0.40/Envelope)
Earn 20 points
Free delivery w/ $25+
Add
JAM Paper 6.5 x 6.5 Square Invitation Envelopes, White, Bulk 250/Box (28417H)JAM Paper 6.5 x 6.5 Square Invitation Envelopes, White, Bulk 250/Box (28417H)
Quick view
JAM Paper 6.5 x 6.5 Square Invitation Envelopes, White, Bulk 250/Box (28417H)
Item #:901-1589843JAM
$111.99
Per pack
($0.45/Envelope)
Earn 111 points
Free delivery
Add
LUX® 70lb 5 3/4x8 3/4 Square Flap Linen Envelopes W/Peel&Press; Natural, 500/BX
Quick view
LUX® 70lb 5 3/4"x8 3/4" Square Flap Linen Envelopes W/Peel&Press; Natural, 500/BX
Item #:901-515929LUX
$124.49
Per box
($0.25/Envelope)
Earn 124 points
Free delivery
Add
Lux® 5 3/4 x 8 3/4 80lbs. Square Flap Envelopes W/Peel & Press; Pool Blue, 50/Pk
Quick view
Lux® 5 3/4" x 8 3/4" 80lbs. Square Flap Envelopes W/Peel & Press; Pool Blue, 50/Pk
Item #:901-282938LUX
$16.39
Per pack
($0.33/Envelope)
Earn 16 points
Free delivery w/ $25+
Add
JAM Paper 7.5 x 7.5 Square Invitation Envelopes with Euro Flap, Ivory, 25/Pack (2792287)JAM Paper 7.5 x 7.5 Square Invitation Envelopes with Euro Flap, Ivory, 25/Pack (2792287)
Quick view
JAM Paper 7.5 x 7.5 Square Invitation Envelopes with Euro Flap, Ivory, 25/Pack (2792287)
Item #:901-24295161
$21.99
Per pack
($0.88/Envelope)
Earn 21 points
Free delivery w/ $25+
Add
LUX 6 1/2 x 6 1/2 Square Envelopes, 250/Box, White Linen (8535-WLI-250)
Quick view
LUX 6 1/2 x 6 1/2 Square Envelopes, 250/Box, White Linen (8535-WLI-250)
Item #:901-385876LUX
$83.39
Per box
($0.33/Envelope)
Earn 83 points
Free delivery
Add
1 23 ... 13
Displaying 1-24 of 289
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

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
$43.99 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
Associated requestors