Skip to main content Skip to footer
Customize your holiday gifts today
Get $20 off your first order of $100
Save 5% with Rewards+
Fanatical customer service since 1956
Track an order
Shared cart
Reward not redeemed
You dont have enough points to redeem this reward.
Shopping list
Alternative Items


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
White (122)
Clear (21)
Black (24)
Red (15)
Blue (11)
Brown (18)
Pink (9)
Yellow (8)
Gold (7)
Gray/Silver (13)
Beige (11)
Green (9)
Ivory (2)
Purple (2)
Metallic (1)
Multicolor (1)
Natural (1)
Natural Kraft (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" (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)
Go
$0 - $10 (4)
$10 - $20 (51)
$20 - $30 (51)
$30 - $40 (32)
$40 - $50 (16)
$50 - $60 (18)
$60 - $70 (17)
$70 - $80 (5)
$80 - $90 (4)
$90 - $100 (10)
$100 - $150 (40)
$150 - $200 (20)
$200 - $300 (19)
$300 - $400 (3)
$400 - $500 (1)
$750 - $1000 (2)
Clear
500 Per Pack (60)
25 Per Pack (51)
50 Per Pack (91)
1000 Per Pack (28)
250 Per Pack (38)
100 Per Pack (17)
All filters
Sort by:
Best matchPrice: High-LowPrice: Low-HighRating: High-Low
All filters 293 items found
LUX® 80lb 4 3/4x6 1/2 Square Flap Envelopes W/Peel&Press; White, 500/BX
Quick view
LUX® 80lb 4 3/4"x6 1/2" Square Flap Envelopes W/Peel&Press; White, 500/BX
Item #: 901-516182LUX
Item #: 901-516182LUX
white
Size: A6 (4 3/4"x6 1/2")
Closure: Peel & press
$101.89
Per box
($0.20/Envelope)
Add to cart
Earn 101 points
Free delivery
JAM Paper 6.5 x 6.5 Kraft Square Invitation Envelopes, Brown Kraft Paper Bag, 25/Pack (63131150)JAM Paper 6.5 x 6.5 Kraft Square Invitation Envelopes, Brown Kraft Paper Bag, 25/Pack (63131150)
Quick view
JAM Paper 6.5 x 6.5 Kraft Square Invitation Envelopes, Brown Kraft Paper Bag, 25/Pack (63131150)
Item #: 901-2329331JAM
Item #: 901-2329331JAM
6 1/2" x 6 1/2" Square Envelopes
Made with Brown Kraft Paper Bag paper
6 1/2" x 6 1/2"
$31.99
Per pack
($1.28/Envelope)
Add to cart
Earn 31 points
Free delivery
LUX 70lb 4 1/8x9 1/2 Square Flap Linen Envelopes, White, 500/BX
Quick view
LUX 70lb 4 1/8"x9 1/2" Square Flap Linen Envelopes, White, 500/BX
Item #: 901-513618LUX
Item #: 901-513618LUX
#10 Square Flap Envelopes are perfect for mailing checks/invoices/letterhead/personal letters/statements/direct mail
Comes in White Linen, 80lb. Text Paper
Dimensions: 4 1/8"H x 9 1/2"W
$170.99
Per box
($0.34/Envelope)
Add to cart
Earn 170 points
Free delivery
LUX® 80lb 5 1/4x7 1/4 Square Flap Envelopes W/Peel&Press; Bright White, 250/BX
Quick view
LUX® 80lb 5 1/4"x7 1/4" Square Flap Envelopes W/Peel&Press; Bright White, 250/BX
Item #: 901-513965LUX
Item #: 901-513965LUX
250/box
Bright white
Size: A7 (5 1/4"x7 1/4")
$53.99
Per box
($0.22/Envelope)
Add to cart
Earn 53 points
Free delivery
LUX® 30lb 5 1/2x8 1/8 Square Flap Envelopes W/Glue; Clear Translucent, 1000/BX
Quick view
LUX® 30lb 5 1/2"x8 1/8" Square Flap Envelopes W/Glue; Clear Translucent, 1000/BX
Item #: 901-515951LUX
Item #: 901-515951LUX
1000/box
Clear translucent
Size: A8 (5 1/2 x 8 1/8)
$356.99
Per box
($0.36/Envelope)
Add to cart
Earn 356 points
Free delivery
JAM Paper Square Envelopes, Peel & Press, Garnet Red, 6 x 6, 500 Pack (8525-101-500)
Quick view
JAM Paper Square Envelopes, Peel & Press, Garnet Red, 6 x 6, 500 Pack (8525-101-500)
Item #: 901-24578468
Item #: 901-24578468
Square Envelopes
6" x 6"
Garnet Red
$118.99
Per pack
($0.24/Envelope)
Add to cart
Earn 118 points
Free delivery
LUX® 80lb 5 1/4x7 1/4 Square Flap Envelopes W/Peel&Press; Bright White, 500/BX
Quick view
LUX® 80lb 5 1/4"x7 1/4" Square Flap Envelopes W/Peel&Press; Bright White, 500/BX
Item #: 901-513964LUX
Item #: 901-513964LUX
500/box
Bright white
Size: A7 (5 1/4"x7 1/4")
$102.99
Per box
($0.21/Envelope)
Add to cart
Earn 102 points
Free delivery
LUX® 70lb 5 3/4x8 3/4 Square Flap Linen Envelopes W/Peel&Press; White, 500/BX
Quick view
LUX® 70lb 5 3/4"x8 3/4" Square Flap Linen Envelopes W/Peel&Press; White, 500/BX
Item #: 901-515910LUX
Item #: 901-515910LUX
White linen
Size: A9 (5 3/4"x8 3/4")
Closure: Peel & press
$123.99
Per box
($0.25/Envelope)
Add to cart
Earn 123 points
Free delivery
New Customers
Save
$20 off when you spend $100 - New Customer Offer
Discount
Limit 1
0 points
Details
Redeemed
0 Redeemed
Redeem Redeem
Featured
Save
$10 Prezzee COFFEE eGift Card - includes Starbucks, Dunkin and more
210 points
175 points
Details
0 Redeemed
Redeem Redeem
Featured
Save
Mystery Gift - up to $19.99 value
99 points
Details
0 Redeemed
Redeem Redeem
Featured
Save
GIFT OF THE DAY: Embossed Oversized Velvet Throw - NavyGIFT OF THE DAY: Embossed Oversized Velvet Throw - Navy
160 points
Details
0 Redeemed
Redeem Redeem
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
Item #: 901-282128LUX
Ruby red
Size: 5 1/2" x 5 1/2"
Closure: Peel and press
$28.99
Per pack
($0.58/Envelope)
Add to cart
Earn 28 points
Free delivery
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
Item #: 901-1589073JAM
Clear translucent envelope
Blank interior for personalized message
Envelope Size: 7.5" x 7.5"
$58.99
Per pack
($1.18/Envelope)
Add to cart
Earn 58 points
Free delivery
LUX 80lbs. 5 x 5 Square Envelopes W/Peel & Press, Pool Blue, 250/BX
Quick view
LUX 80lbs. 5" x 5" Square Envelopes W/Peel & Press, Pool Blue, 250/BX
Item #: 901-388714LUX
Item #: 901-388714LUX
5 x 5 Square Envelopes are perfect for announcements/weddings/greeting cards/invitations
Comes in Pool, 80lb. Text Paper
Dimensions: 5"L x 5"W
$57.99
Per box
($0.23/Envelope)
Add to cart
Earn 57 points
Free delivery
LUX® 80lb 5 1/4x7 1/4 Square Flap Envelopes W/Peel&Press; Bright White, 1000/BX
Quick view
LUX® 80lb 5 1/4"x7 1/4" Square Flap Envelopes W/Peel&Press; Bright White, 1000/BX
Item #: 901-513967LUX
Item #: 901-513967LUX
Bright white
Size: A7 (5 1/4"x7 1/4")
Closure: Peel & press
$160.39
Per box
($0.16/Envelope)
Add to cart
Earn 160 points
Free delivery
JAM Paper 3.125 x 3.125 Square Translucent Vellum Invitation Envelopes, Clear, 25/Pack (2851291)JAM Paper 3.125 x 3.125 Square Translucent Vellum Invitation Envelopes, Clear, 25/Pack (2851291)
Quick view
JAM Paper 3.125 x 3.125 Square Translucent Vellum Invitation Envelopes, Clear, 25/Pack (2851291)
Item #: 901-262111JAM
Item #: 901-262111JAM
Size: 3 1/8" x 3 1/8"
Closure: Gum
Opening: Square
$15.59
Per pack
($0.62/Envelope)
Add to cart
Earn 15 points
Free delivery w/ $25+
Lux® 4 3/8 x 5 3/4 70lbs. Square Flap Envelopes W/Peel & Press; Sunflower Yellow, 50/Pk
Quick view
Lux® 4 3/8" x 5 3/4" 70lbs. Square Flap Envelopes W/Peel & Press; Sunflower Yellow, 50/Pk
Item #: 901-282512LUX
Item #: 901-282512LUX
Sunflower
Size: A2 (4 3/8" x 5 3/4")
Closure: Peel and press
$19.59
Per pack
($0.39/Envelope)
Add to cart
Earn 19 points
Free delivery w/ $25+
LUX® 70lb 5 1/2x5 1/2 Square Flap Envelopes W/Peel&Press; Teal Blue, 500/BX
Quick view
LUX® 70lb 5 1/2"x5 1/2" Square Flap Envelopes W/Peel&Press; Teal Blue, 500/BX
Item #: 901-514219LUX
Item #: 901-514219LUX
Teal
Size: 5 1/2"x5 1/2"
Closure: Peel & press
$157.99
Per box
($0.32/Envelope)
Add to cart
Earn 157 points
Free delivery
LUX® 4 3/8 x 5 3/4 Square Flap Envelopes W/Peel & Press; Gold Metallic, 1000/BX
Quick view
LUX® 4 3/8" x 5 3/4" Square Flap Envelopes W/Peel & Press; Gold Metallic, 1000/BX
Item #: 901-385149LUX
Item #: 901-385149LUX
Gold metallic
Size: A2 (4 3/8" x 5 3/8")
Closure: Peel & press
$181.99
Per box
($0.18/Envelope)
Add to cart
Earn 181 points
Free delivery
JAM Paper Square Envelopes, Peel & Press, 3 1/4 x 3 1/4, Black Linen, 500 Pack (8503-BLI-500)
Quick view
JAM Paper Square Envelopes, Peel & Press, 3 1/4 x 3 1/4, Black Linen, 500 Pack (8503-BLI-500)
Item #: 901-24578412
Item #: 901-24578412
Square Envelopes
3.25" x 3.25"
Black
$109.99
Per pack
($0.22/Envelope)
Add to cart
Earn 109 points
Free delivery
LUX 9 x 9 Square Envelopes, 50/Box, 70lb. White (11009-50)
Quick view
LUX 9 x 9 Square Envelopes, 50/Box, 70lb. White (11009-50)
Item #: 901-282321LUX
Item #: 901-282321LUX
9 x 9 Square Envelopes are perfect for announcements/weddings/greeting cards/invitations
Comes in 70lb. White, 70lb. Text Paper
Dimensions: 9"L x 9"W
$30.99
1-3 pack
($0.62/Envelope)
Save 6%
$28.99
4+ pack
($0.58/Envelope)
Add to cart
Earn 30 points
Free delivery
JAM Paper 5 x 5 Square Invitation Envelopes, White, 25/Pack (28414)JAM Paper 5 x 5 Square Invitation Envelopes, White, 25/Pack (28414)
Quick view
JAM Paper 5 x 5 Square Invitation Envelopes, White, 25/Pack (28414)
Item #: 901-261296JAM
(1)
Item #: 901-261296JAM
Size: 5" x 5"
Closure: Gum
Opening: Square
$20.99
Per pack
($0.84/Envelope)
Add to cart
Earn 20 points
Free delivery w/ $25+
JAM Paper Square Envelopes, Peel & Press, Blush Pink, 6 x 6, 500 Pack (8525-114-500)
Quick view
JAM Paper Square Envelopes, Peel & Press, Blush Pink, 6 x 6, 500 Pack (8525-114-500)
Item #: 901-24578470
Item #: 901-24578470
Square Envelopes
6" x 6"
Blush Pink
$118.99
Per pack
($0.24/Envelope)
Add to cart
Earn 118 points
Free delivery
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
(1)
Item #: 901-261314JAM
Size: 2 3/8" x 2 3/8"
Closure: Gum
Opening: Square
$27.99
Per box
($0.28/Envelope)
Add to cart
Earn 27 points
Free delivery
JAM Paper 5 x 5 Square Invitation Envelopes, Black Linen, 25/Pack (V01209)JAM Paper 5 x 5 Square Invitation Envelopes, Black Linen, 25/Pack (V01209)
Quick view
JAM Paper 5 x 5 Square Invitation Envelopes, Black Linen, 25/Pack (V01209)
Item #: 901-261574JAM
Item #: 901-261574JAM
Size: 5" x 5"
Closure: Gum
Opening: Square
$25.99
Per pack
($1.04/Envelope)
Add to cart
Earn 25 points
Free delivery
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
Item #: 901-261304JAM
Size: 7" x 7"
Closure: Gum
Opening: Square
$15.99
Per pack
($0.64/Envelope)
Add to cart
Earn 15 points
Free delivery w/ $25+
JAM Paper 13 1/2 Square Invitation Envelope, 13 1/2 x 13 1/2, White, 100/Box (03992323B)JAM Paper 13 1/2 Square Invitation Envelope, 13 1/2 x 13 1/2, White, 100/Box (03992323B)
Quick view
JAM Paper 13 1/2 Square Invitation Envelope, 13 1/2" x 13 1/2", White, 100/Box (03992323B)
Item #: 901-261333JAM
(1)
Item #: 901-261333JAM
Perfect for greeting cards, Invitations, Weddings or any announcement
These envelopes feature a unique square shape and a gum closure
Finish: Smooth
$122.09
Per box
($1.22/Envelope)
Add to cart
Earn 122 points
Free delivery
1 23 ... 13
Displaying 1-24 of 293

Delivering quality & savings with our in-house brands

Staples logo Tru Red logo Union & Scale logo Pick Me Up logo Coastwide logo Workplace logo Perk logo Staples tech logo
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
$39.99 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