Skip to main content Skip to footer
Save more on your next order with Rewards+
How Rewards Work
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
White (122)
Gray/Silver (13)
Black (22)
Clear (20)
Brown (18)
Red (15)
Beige (11)
Blue (11)
Pink (9)
Green (8)
Yellow (8)
Natural Kraft (1)
Gold (7)
Ivory (2)
Purple (2)
Metallic (1)
Multicolor (1)
Natural (1)
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)
Go
$0 - $10 (4)
$10 - $20 (59)
$20 - $30 (47)
$30 - $40 (25)
$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
50 Per Pack (91)
500 Per Pack (60)
250 Per Pack (38)
25 Per Pack (47)
1000 Per Pack (28)
100 Per Pack (17)
All filters
Sort by:
Best matchPrice: High-LowPrice: Low-HighRating: High-Low
All filters 289 items found
LUX 5 1/2 x 5 1/2 Square Envelopes, 50/Box, Natural (8515-03-50)
Quick view
LUX 5 1/2 x 5 1/2 Square Envelopes, 50/Box, Natural (8515-03-50)
Item #:901-282122LUX
$17.99
Per pack
($0.36/Envelope)
Earn 17 points
Free delivery w/ $25+
Add
JAM Paper 6.5 x 6.5 Square Metallic Invitation Envelopes, Stardream Silver, 25/Pack (GCST509)JAM Paper 6.5 x 6.5 Square Metallic Invitation Envelopes, Stardream Silver, 25/Pack (GCST509)
Quick view
JAM Paper 6.5 x 6.5 Square Metallic Invitation Envelopes, Stardream Silver, 25/Pack (GCST509)
Item #:901-261996JAM
$33.99
Per pack
($1.36/Envelope)
Earn 33 points
Free delivery
Add
JAM Paper Square Envelopes, Peel & Press, 60lb Blush Pink, 6 1/4 x 6 1/4, 50 Pack, (8530-114-50)
Quick view
JAM Paper Square Envelopes, Peel & Press, 60lb Blush Pink, 6 1/4 x 6 1/4, 50 Pack, (8530-114-50)
Item #:901-24578549
$14.99
Per pack
($0.30/Envelope)
Earn 14 points
Free delivery w/ $25+
Add
JAM Paper 8.5 x 8.5 Square Invitation Envelopes, White, 25/Pack (4231)JAM Paper 8.5 x 8.5 Square Invitation Envelopes, White, 25/Pack (4231)
Quick view
JAM Paper 8.5 x 8.5 Square Invitation Envelopes, White, 25/Pack (4231)
Item #:901-263922JAM
5
(1)
$18.99
Per pack
($0.76/Envelope)
Earn 18 points
Free delivery w/ $25+
Add
Lux® 5 3/4 x 8 3/4 80lbs. Square Flap Envelopes W/Peel & Press; Navy Blue, 50/Pk
Quick view
Lux® 5 3/4" x 8 3/4" 80lbs. Square Flap Envelopes W/Peel & Press; Navy Blue, 50/Pk
Item #:901-282937LUX
$20.99
Per pack
($0.42/Envelope)
Earn 20 points
Free delivery w/ $25+
Add
JAM Paper Square Envelopes, Peel & Press, Citrus Yellow, 6 1/4 x 6 1/4, 500/Pack (8530-L20-500)
Quick view
JAM Paper Square Envelopes, Peel & Press, Citrus Yellow, 6 1/4 x 6 1/4, 500/Pack (8530-L20-500)
Item #:901-24578524
$78.99
Per pack
($0.16/Envelope)
Earn 78 points
Free delivery
Add
LUX® 60lb 5 1/4x7 1/4 Square Flap Envelopes W/Peel&Press; White W/Silver LUX, 500/BX
Quick view
LUX® 60lb 5 1/4"x7 1/4" Square Flap Envelopes W/Peel&Press; White W/Silver LUX, 500/BX
Item #:901-513811LUX
$105.29
Per box
($0.21/Envelope)
Earn 105 points
Free delivery
Add
Lux® 2 7/8 x 6 1/2 Square Flap Currency Envelopes; White, 50/Pk
Quick view
Lux® 2 7/8" x 6 1/2" Square Flap Currency Envelopes; White, 50/Pk
Item #:901-282966LUX
$14.99
Per pack
($0.30/Envelope)
Earn 14 points
Free delivery w/ $25+
Add
JAM Paper® 5 x 5 Square Envelopes, Clear Translucent Vellum, 50/pack (31032I)JAM Paper® 5 x 5 Square Envelopes, Clear Translucent Vellum, 50/pack (31032I)
Quick view
JAM Paper® 5 x 5 Square Envelopes, Clear Translucent Vellum, 50/pack (31032I)
Item #:901-1589078JAM
$49.99
Per pack
($1.00/EACH)
Earn 49 points
Free delivery
Add
JAM Paper 5 x 5 Square Invitation Envelopes, White, 50/Pack (28414I)
Quick view
JAM Paper 5 x 5 Square Invitation Envelopes, White, 50/Pack (28414I)
Item #:901-1588513JAM
3.5
(2)
$33.99
Per pack
($0.68/Envelope)
Earn 33 points
Free delivery
Add
JAM Paper 4.5 x 4.5 Square Invitation Envelopes, White, Bulk 250/Box (439911145H)JAM Paper 4.5 x 4.5 Square Invitation Envelopes, White, Bulk 250/Box (439911145H)
Quick view
JAM Paper 4.5 x 4.5 Square Invitation Envelopes, White, Bulk 250/Box (439911145H)
Item #:901-1589775JAM
3
(2)
$64.99
Per pack
($0.26/Envelope)
Earn 64 points
Free delivery
Add
JAM Paper Square Envelopes, Peel & Press, Candy Pink, 6 1/4 x 6 1/4, 250 Pack (8530-23-250)
Quick view
JAM Paper Square Envelopes, Peel & Press, Candy Pink, 6 1/4 x 6 1/4, 250 Pack (8530-23-250)
Item #:901-24578535
$49.99
Per pack
($0.20/Envelope)
Earn 49 points
Free delivery
Add
Lux® 5 1/2 x 5 1/2 70lbs. Square Flap Envelopes W/Peel & Press; Ruby Red, 50/Pk
Quick view
Lux® 5 1/2" x 5 1/2" 70lbs. Square Flap Envelopes W/Peel & Press; Ruby Red, 50/Pk
Item #:901-282128LUX
$18.59
Per pack
($0.37/Envelope)
Earn 18 points
Free delivery w/ $25+
Add
LUX® 70lb 5 3/4x8 3/4 Square Flap Envelopes W/Peel&Press; Grocery Bag Brown, 500/BX
Quick view
LUX® 70lb 5 3/4"x8 3/4" Square Flap Envelopes W/Peel&Press; Grocery Bag Brown, 500/BX
Item #:901-515930LUX
$104.19
Per box
($0.21/Envelope)
Earn 104 points
Free delivery
Add
80 lb 6 1/4 x 6 1/4 Peel & Press Square Envelopes, Midnight Black, 50/Pack
Quick view
80 lb 6 1/4" x 6 1/4" Peel & Press Square Envelopes, Midnight Black, 50/Pack
Item #:901-1030064LUX
$20.09
Per pack
($0.40/Envelope)
Earn 20 points
Free delivery w/ $25+
Add
LUX® 70lb5 1/4x7 1/4 Square Flap Envelopes W/Peel&Press; Natural W/Gold LUX, 500/BX
Quick view
LUX® 70lb5 1/4"x7 1/4" Square Flap Envelopes W/Peel&Press; Natural W/Gold LUX, 500/BX
Item #:901-513907LUX
$107.49
Per box
($0.21/Envelope)
Earn 107 points
Free delivery
Add
JAM Paper 10 x 10 Large Square Invitation Envelopes, White, 50/Pack (3992319I)JAM Paper 10 x 10 Large Square Invitation Envelopes, White, 50/Pack (3992319I)
Quick view
JAM Paper 10 x 10 Large Square Invitation Envelopes, White, 50/Pack (3992319I)
Item #:901-1588504JAM
$47.29
Per pack
($0.95/Envelope)
Earn 47 points
Free delivery
Add
JAM Paper Square Envelopes, Peel & Press, Avocado Green, 6 1/4 x 6 1/4, 250 Pack (8530-2502-250)
Quick view
JAM Paper Square Envelopes, Peel & Press, Avocado Green, 6 1/4 x 6 1/4, 250 Pack (8530-2502-250)
Item #:901-24578462
$58.99
Per pack
($0.24/Envelope)
Earn 58 points
Free delivery
Add
LUX® 70lb 5 1/4x7 1/4 Square Flap Exclusive Envelopes W/Peel&Press; Sunflower Yellow, 500/BX
Quick view
LUX® 70lb 5 1/4"x7 1/4" Square Flap Exclusive Envelopes W/Peel&Press; Sunflower Yellow, 500/BX
Item #:901-514271LUX
$96.29
Per box
($0.19/Envelope)
Earn 96 points
Free delivery
Add
JAM Paper 9 x 9 Square Invitation Envelopes, White, Bulk 1000/Carton (4232C)JAM Paper 9 x 9 Square Invitation Envelopes, White, Bulk 1000/Carton (4232C)
Quick view
JAM Paper 9 x 9 Square Invitation Envelopes, White, Bulk 1000/Carton (4232C)
Item #:901-261347JAM
5
(1)
$273.99
Per carton
($0.27/Envelope)
Earn 273 points
Free delivery
Add
LUX® 80lb 4 1/4x6 1/4 Square Flap LUX Envelopes W/Peel&Press; Smoke Gray, 500/BX
Quick view
LUX® 80lb 4 1/4"x6 1/4" Square Flap LUX Envelopes W/Peel&Press; Smoke Gray, 500/BX
Item #:901-513678LUX
$96.49
Per box
($0.19/Envelope)
Earn 96 points
Free delivery
Add
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)
$95.59
Per pack
($1.91/Envelope)
Earn 95 points
Free delivery
Add
LUX® 70lb 5 1/2x5 1/2 Square Flap Envelopes W/Peel&Press; Smoke Gray, 500/BX
Quick view
LUX® 70lb 5 1/2"x5 1/2" Square Flap Envelopes W/Peel&Press; Smoke Gray, 500/BX
Item #:901-514221LUX
$139.29
Per box
($0.28/Envelope)
Earn 139 points
Free delivery
Add
LUX® 80lb 4 1/4x6 1/4 Square Flap LUX Envelopes W/Peel&Press; Candy Pink, 500/BX
Quick view
LUX® 80lb 4 1/4"x6 1/4" Square Flap LUX Envelopes W/Peel&Press; Candy Pink, 500/BX
Item #:901-513692LUX
$96.49
Per box
($0.19/Envelope)
Earn 96 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