Skip to main content Skip to footer
How Rewards Work
$10 off when you spend $100
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

   (293 Products)
Filter by:
Clear
JAM Paper (152)
LUX (141)
Clear
White (122)
Red (15)
Black (24)
Brown (18)
Gold (7)
Clear (21)
Gray/Silver (13)
Beige (11)
Blue (11)
Green (9)
Pink (9)
Yellow (8)
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 (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
500 Per Pack (60)
25 Per Pack (51)
50 Per Pack (91)
1000 Per Pack (28)
100 Per Pack (17)
250 Per Pack (38)
All filters
Sort by:
Best matchPrice: High-LowPrice: Low-HighRating: High-Low
All filters 293 items found
LUX Self Seal Invitation Envelopes, 7 1/2 x 7 1/2, White, 50/Pack (10951-50)
Quick view
LUX Self Seal Invitation Envelopes, 7 1/2" x 7 1/2", White, 50/Pack (10951-50)
Item #: 901-24261251
Item #: 901-24261251
Dimensions: 7.5"L x 7.5"W
Comes in 70lb. White
Sold as 50 per box
$19.39
Per pack
($0.39/Envelope)
Add to cart
Earn 19 points
Free delivery w/ $25+
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
Item #: 901-516326LUX
White
Size: A2 (4 3/8"x5 3/4")
Closure: Peel & press
$64.69
Per box
($0.13/Envelope)
Add to cart
Earn 64 points
Free delivery
JAM Paper 6.5 x 6.5 Square Invitation Envelopes, White, 100/Pack (28417B)JAM Paper 6.5 x 6.5 Square Invitation Envelopes, White, 100/Pack (28417B)
Quick view
JAM Paper 6.5 x 6.5 Square Invitation Envelopes, White, 100/Pack (28417B)
Item #: 901-261322JAM
Item #: 901-261322JAM
Size: 6 1/2" x 6 1/2"
Closure: Gum
Opening: Square
$53.59
Per box
($0.54/Envelope)
Add to cart
Earn 53 points
Free delivery
LUX® 60lb 5 3/4x8 3/4 Square Flap Envelopes W/Peel&Press; White/Gold, 500/BX
Quick view
LUX® 60lb 5 3/4"x8 3/4" Square Flap Envelopes W/Peel&Press; White/Gold, 500/BX
Item #: 901-513774LUX
Item #: 901-513774LUX
White with gold lux lining
Size: A9 (5 3/4"x8 3/4")
Closure: Peel & press
$148.89
Per box
($0.30/Envelope)
Add to cart
Earn 148 points
Free delivery
JAM Paper 9 x 9 Square Invitation Envelopes, White, 25/Pack (4232)JAM Paper 9 x 9 Square Invitation Envelopes, White, 25/Pack (4232)
Quick view
JAM Paper 9 x 9 Square Invitation Envelopes, White, 25/Pack (4232)
Item #: 901-263923JAM
(4)
Item #: 901-263923JAM
Size: 9" x 9"
Closure: Gum
Opening: Square
$20.69
Per pack
($0.83/Envelope)
Add to cart
Earn 20 points
Free delivery w/ $25+
Lux® 4 1/4 x 6 1/4 60lbs. Square Flap Envelopes W/Peel & Press; White/Gold LUX Lining
Quick view
Lux® 4 1/4" x 6 1/4" 60lbs. Square Flap Envelopes W/Peel & Press; White/Gold LUX Lining
Item #: 901-282572LUX
Item #: 901-282572LUX
White/gold LUx lining
Size: A4 (4 1/4" x 6 1/4")
Closure: Peel and press
$16.99
Per pack
($0.34/Envelope)
Add to cart
Earn 16 points
Free delivery w/ $25+
LUX® 80lb 4 3/4x6 1/2 Square Flap Envelopes W/Peel&Press; Bright White, 250/BX
Quick view
LUX® 80lb 4 3/4"x6 1/2" Square Flap Envelopes W/Peel&Press; Bright White, 250/BX
Item #: 901-513970LUX
Item #: 901-513970LUX
250/box
Bright white
Size: A6 (4 3/4"x6 1/2")
$50.99
Per box
($0.20/Envelope)
Add to cart
Earn 50 points
Free delivery
LUX® 80lb 4 3/4x6 1/2 Square Flap Envelopes W/Peel&Press; Bright White, 1000/BX
Quick view
LUX® 80lb 4 3/4"x6 1/2" Square Flap Envelopes W/Peel&Press; Bright White, 1000/BX
Item #: 901-513971LUX
Item #: 901-513971LUX
1000/box
Bright white
Size: A6 (4 3/4"x6 1/2")
$174.09
Per box
($0.17/Envelope)
Add to cart
Earn 174 points
Free delivery
Featured
Save
6 pc Butter Fruit Cookies - Apricot, Raspberry
145 points
Details
0 Redeemed
Redeem Redeem
Featured
Save
GIFT OF THE WEEK: Hot Dog BBQ Grilling CageGIFT OF THE WEEK: Hot Dog BBQ Grilling Cage
145 points
Details
0 Redeemed
Redeem Redeem
New Customers
Save
8 Soft Cookies - Choc Chip, Snickerdoodle, Oatmeal & Vanilla8 Soft Cookies - Choc Chip, Snickerdoodle, Oatmeal & Vanilla
25 points
Details
0 Redeemed
Redeem Redeem
Featured
Save
Picnic Time® Mini Bean Bag Throw
638 points
Details
0 Redeemed
Redeem Redeem
LUX® 80lb 5 1/4x7 1/4 Square Flap Envelopes W/Glue; Jupiter Metallic Red, 1000/BX
Quick view
LUX® 80lb 5 1/4"x7 1/4" Square Flap Envelopes W/Glue; Jupiter Metallic Red, 1000/BX
Item #: 901-515494LUX
Item #: 901-515494LUX
Jupiter metallic
Size: A7 (5 1/4"x7 1/4")
Closure: Moistenable glue
$252.29
Per box
($0.25/Envelope)
Add to cart
Earn 252 points
Free delivery
JAM Paper 11.5 x 11.5 Large Square Invitation Envelopes, White, 25/Pack (3992321)JAM Paper 11.5 x 11.5 Large Square Invitation Envelopes, White, 25/Pack (3992321)
Quick view
JAM Paper 11.5" x 11.5" Large Square Invitation Envelopes, White, 25/Pack (3992321)
Item #: 901-261310JAM
(2)
Item #: 901-261310JAM
Size: 11 1/2" x 11 1/2"
Closure: Gum
Opening: Square
$42.79
Per pack
($1.71/Envelope)
Add to cart
Earn 42 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 5.5 x 5.5 Square Invitation Envelopes, Black Linen, 25/Pack (V01210)JAM Paper 5.5 x 5.5 Square Invitation Envelopes, Black Linen, 25/Pack (V01210)
Quick view
JAM Paper 5.5 x 5.5 Square Invitation Envelopes, Black Linen, 25/Pack (V01210)
Item #: 901-261575JAM
Item #: 901-261575JAM
Size: 5 1/2" x 5 1/2"
Closure: Gum
Opening: Square
$25.99
Per pack
($1.04/Envelope)
Add to cart
Earn 25 points
Free delivery
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
(1)
Item #: 901-1588468JAM
Blank interior for personalized message
Smooth paper finish for a sleek appearance
Straight-flap gum closure helps keep contents secure
$54.99
Per pack
($1.10/Envelope)
Add to cart
Earn 54 points
Free delivery
LUX® 60lb 4 3/8x5 3/4 Square Flap Envelopes W/Peel&Press; White W/Black LUX, 500/BX
Quick view
LUX® 60lb 4 3/8"x5 3/4" Square Flap Envelopes W/Peel&Press; White W/Black LUX, 500/BX
Item #: 901-513840LUX
Item #: 901-513840LUX
White with black LUx lining
Size: A2 (4 3/8"x5 3/4")
Closure: Peel & press
$129.89
Per box
($0.26/Envelope)
Add to cart
Earn 129 points
Free delivery
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
Item #: 901-516143LUX
1000/box
Grocery bag
Size: A7 (5 1/4"x7 1/4")
$138.19
Per box
($0.14/Envelope)
Add to cart
Earn 138 points
Free delivery
JAM Paper 10.5 x 10.5 Square Invitation Envelopes, White, 25/Pack (3992320)JAM Paper 10.5 x 10.5 Square Invitation Envelopes, White, 25/Pack (3992320)
Quick view
JAM Paper 10.5" x 10.5" Square Invitation Envelopes, White, 25/Pack (3992320)
Item #: 901-261309JAM
Item #: 901-261309JAM
Size: 10 1/2" x 10 1/2"
Closure: Gum
Opening: Square
$25.99
Per pack
($1.04/Envelope)
Add to cart
Earn 25 points
Free delivery
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
Item #: 901-516584LUX
500/box
Bright white
Size: 8"x8"
$148.89
Per box
($0.30/Envelope)
Add to cart
Earn 148 points
Free delivery
JAM Paper® 5 x 5 Square Invitation Envelopes, White, 100/Pack (28414B)JAM Paper® 5 x 5 Square Invitation Envelopes, White, 100/Pack (28414B)
Quick view
JAM Paper® 5 x 5 Square Invitation Envelopes, White, 100/Pack (28414B)
Item #: 901-261317JAM
(2)
Item #: 901-261317JAM
Size: 5" x 5"
Closure: Gum
Opening: Square
$46.99
Per box
($0.47/Envelope)
Add to cart
Earn 46 points
Free delivery
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
(2)
Item #: 901-1589775JAM
White envelope
Blank interior for personalized message
Envelope Size: 4.5" x 4.5"
$64.99
Per pack
($0.26/Envelope)
Add to cart
Earn 64 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
$99.99
Per pack
($0.20/Envelope)
Add to cart
Earn 99 points
Free delivery
JAM Paper 4.5 x 4.5 Square Invitation Envelopes, White, 100/Pack (439911145B)JAM Paper 4.5 x 4.5 Square Invitation Envelopes, White, 100/Pack (439911145B)
Quick view
JAM Paper 4.5 x 4.5 Square Invitation Envelopes, White, 100/Pack (439911145B)
Item #: 901-261316JAM
(3)
Item #: 901-261316JAM
Size: 4 1/2" x 4 1/2"
Closure: Gum
Opening: Square
$23.99
Per box
($0.24/Envelope)
Add to cart
Earn 23 points
Free delivery w/ $25+
LUX® 60lb 4 3/4x6 1/2 Square Flap Envelopes W/Peel&Press; White, 500/BX
Quick view
LUX® 60lb 4 3/4"x6 1/2" Square Flap Envelopes W/Peel&Press; White, 500/BX
Item #: 901-516179LUX
Item #: 901-516179LUX
White
Size: A6 (4 3/4"x6 1/2")
Closure: Peel & press
$67.89
Per box
($0.14/Envelope)
Add to cart
Earn 67 points
Free delivery
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
Item #: 901-515792LUX
Gold metallic
Size: A2 (4 3/8"x5 3/4")
Closure: Peel & press
$96.49
Per box
($0.19/Envelope)
Add to cart
Earn 96 points
Free delivery
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
Item #: 901-513811LUX
White with silver lux lining
Size: A7 (5 1/4"x7 1/4")
Closure: Peel & press
$105.29
Per box
($0.21/Envelope)
Add to cart
Earn 105 points
Free delivery
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