Skip to main content Skip to footer
How Rewards Work
$10 off when you spend $100
Save 5% with Rewards+
Fanatical customer service since 1956
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)
Clear (21)
Beige (11)
Yellow (8)
Black (24)
Brown (18)
Red (15)
Gray/Silver (13)
Blue (11)
Pink (9)
Gold (7)
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 (65)
$20 - $30 (45)
$30 - $40 (25)
$40 - $50 (28)
$50 - $60 (13)
$60 - $70 (15)
$70 - $80 (12)
$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)
250 Per Pack (38)
500 Per Pack (60)
25 Per Pack (51)
1000 Per Pack (28)
100 Per Pack (17)
Price Drop
All filters
Sort by:
Best matchPrice: High-LowPrice: Low-HighRating: High-Low
All filters 293 items found
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 9 x 9 Square Invitation Envelopes, Black Linen, 25/Pack (V01215)JAM Paper 9 x 9 Square Invitation Envelopes, Black Linen, 25/Pack (V01215)
Quick view
JAM Paper 9 x 9 Square Invitation Envelopes, Black Linen, 25/Pack (V01215)
Item #: 901-261581JAM
Item #: 901-261581JAM
Size: 9" x 9"
Closure: Gum
Opening: Square
$25.99
Per pack
($1.04/Envelope)
Add to cart
Earn 25 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
$15.99
Per pack
($0.64/Envelope)
Add to cart
Earn 15 points
Free delivery w/ $25+
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
JAM Paper Square Envelopes, Peel & Press, Seafoam Green, 3 1/4 x 3 1/4, 50 Pack (8503-113-50)
Quick view
JAM Paper Square Envelopes, Peel & Press, Seafoam Green, 3 1/4 x 3 1/4, 50 Pack (8503-113-50)
Item #: 901-24578481
Item #: 901-24578481
Square Envelopes
3.25" x 3.25"
Seafoam Green
$13.99
Per pack
($0.28/Envelope)
Add to cart
Earn 13 points
Free delivery w/ $25+
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
Item #: 901-282122LUX
5 1/2 x 5 1/2 Square Envelopes are perfect for announcements/weddings/greeting cards/invitations
Comes in Natural, 70lb. Text Paper
Dimensions: 5 1/2"L x 5 1/2"W
$16.89
Per pack
($0.34/Envelope)
Add to cart
Earn 16 points
Free delivery w/ $25+
JAM Paper 5.5 x 5.5 Square Translucent Vellum Invitation Envelopes, Clear, 50/Pack (74354I)
Quick view
JAM Paper 5.5 x 5.5 Square Translucent Vellum Invitation Envelopes, Clear, 50/Pack (74354I)
Item #: 901-1589077JAM
Item #: 901-1589077JAM
Clear translucent envelope
Blank interior for personalized message
Envelope Size: 5.5" x 5.5"
$49.99
Per pack
($1.00/Envelope)
Add to cart
Earn 49 points
Free delivery
JAM Paper 7 1/2 x 7 1/2 Square Envelopes, Sunflower, 250 Pack, Yellow (EX8555-12-250)
Quick view
JAM Paper 7 1/2 x 7 1/2 Square Envelopes, Sunflower, 250 Pack, Yellow (EX8555-12-250)
Item #: 901-24578458
Item #: 901-24578458
Square Envelopes
7.5" x 7.5"
Yellow
$170.99
Per pack
($0.68/Envelope)
Add to cart
Earn 170 points
Free delivery
Featured
Save
GIFT OF THE WEEK: En Route Travel Packing Cube SetGIFT OF THE WEEK: En Route Travel Packing Cube Set
120 points
Details
0 Redeemed
Redeem Redeem
Featured
Save
Trend Logic Smartphone Grip 2 PackTrend Logic Smartphone Grip 2 Pack
95 points
Details
0 Redeemed
Redeem Redeem
New Customers
Save
Lumin Essence 17ft Copper Wire Mini LightsLumin Essence 17ft Copper Wire Mini Lights
75 points
Details
0 Redeemed
Redeem Redeem
New Customers
Save
Dual USB Wall Charger PlugDual USB Wall Charger Plug
85 points
Details
0 Redeemed
Redeem Redeem
Lux® 5 3/4 x 8 3/4 80lbs. Square Flap Envelopes W/Peel & Press; Silver Metallic, 50/Pk
Quick view
Lux® 5 3/4" x 8 3/4" 80lbs. Square Flap Envelopes W/Peel & Press; Silver Metallic, 50/Pk
Item #: 901-282945LUX
Item #: 901-282945LUX
A9 Invitation Envelopes (5 3/4 x 8 3/4) are perfect for party invites/thank you cards/wedding invites/announcements
Size: A9 (5 3/4" x 8 3/4")
Closure: Peel and press
$26.99
Per pack
($0.54/Envelope)
Add to cart
Earn 26 points
Free delivery
LUX® 80lb 4 1/4x6 1/4 Square Flap LUX Envelopes W/Peel&Press; Candy Pink, 250/BX
Quick view
LUX® 80lb 4 1/4"x6 1/4" Square Flap LUX Envelopes W/Peel&Press; Candy Pink, 250/BX
Item #: 901-513693LUX
Item #: 901-513693LUX
Candy pink
Size: A4 (4 1/4"x6 1/4")
Closure: Peel & press
$54.79
Per box
($0.22/Envelope)
Add to cart
Earn 54 points
Free delivery
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
(1)
Item #: 901-1589847JAM
Regular white square envelope
Blank interior for personalized message
Envelope Size: 5.5" x 5.5"
$120.99
Per pack
($0.48/Envelope)
Add to cart
Earn 120 points
Free delivery
LUX® 70lb 4 3/8x5 3/4 Square Flap Exclusive Envelopes W/Peel&Press; Sunflower Yellow, 500/BX
Quick view
LUX® 70lb 4 3/8"x5 3/4" Square Flap Exclusive Envelopes W/Peel&Press; Sunflower Yellow, 500/BX
Item #: 901-514441LUX
Item #: 901-514441LUX
Sunflower
Size: A2 (4 3/8"x5 3/4")
Closure: Peel & press
$83.39
Per box
($0.17/Envelope)
Add to cart
Earn 83 points
Free delivery
LUX® 70lbs. 4 1/8 x 9 1/2 Square Flap Envelopes W/Glue; Natural, 500/BX
Quick view
LUX® 70lbs. 4 1/8" x 9 1/2" Square Flap Envelopes W/Glue; Natural, 500/BX
Item #: 901-385403LUX
Item #: 901-385403LUX
Natural
Size: #10 (4 1/8" x 9 1/2")
Closure: Moistenable glue
$71.19
Per box
($0.14/Envelope)
Add to cart
Earn 71 points
Free delivery
JAM Paper® 7 x 7 Square Invitation Envelopes, White, 50/Pack (28209I)JAM Paper® 7 x 7 Square Invitation Envelopes, White, 50/Pack (28209I)
Quick view
JAM Paper® 7 x 7 Square Invitation Envelopes, White, 50/Pack (28209I)
Item #: 901-1588507JAM
Item #: 901-1588507JAM
Regular white square envelope
Blank interior for personalized message
Envelope Size: 7" x 7"
$27.99
Per pack
($0.56/EACH)
Add to cart
Earn 27 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
LUX 5 3/4 x 8 3/4 60lbs. Square Flap Envelopes W/Glue, Holiday Red, 50/Pack
Quick view
LUX 5 3/4" x 8 3/4" 60lbs. Square Flap Envelopes W/Glue, Holiday Red, 50/Pack
Item #: 901-282923LUX
(2)
Item #: 901-282923LUX
A9 Invitation Envelopes (5 3/4 x 8 3/4) are perfect for party invites/thank you cards/wedding invites/announcements
Comes in Holiday Red, 60lb. Text Paper
Closure: Moistenable glue
$13.49
Per pack
($0.27/EACH)
Add to cart
Earn 13 points
Free delivery w/ $25+
JAM Paper 13.5 x 13.5 Large Square Invitation Envelopes, White, Bulk 1000/Carton (03992323C)JAM Paper 13.5 x 13.5 Large Square Invitation Envelopes, White, Bulk 1000/Carton (03992323C)
Quick view
JAM Paper 13.5 x 13.5 Large Square Invitation Envelopes, White, Bulk 1000/Carton (03992323C)
Item #: 901-261353JAM
Item #: 901-261353JAM
Size: 13 1/2" x 13 1/2"
Closure: Gum
Opening: Square
$871.99
Per carton
($0.87/Envelope)
Add to cart
Earn 871 points
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
Item #: 901-1589078JAM
Envelope Size: 5" x 5"
Paper Weight: 28 lbs.
Pack includes 50 envelopes
$49.99
Per pack
($1.00/EACH)
Add to cart
Earn 49 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
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
(2)
Item #: 901-1588513JAM
White envelope
Blank interior for personalized message
Envelope Size: 5" x 5"
$33.99
Per pack
($0.68/Envelope)
Add to cart
Earn 33 points
Free delivery
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
Item #: 901-261315JAM
Size: 3 1/8" x 3 1/8"
Closure: Gum
Opening: Square
$27.99
Per pack
($0.28/Envelope)
Add to cart
Earn 27 points
Free delivery
JAM Paper 8.5 x 8.5 Square Foil Invitation Envelopes with Zip Closure, Clear, 25/Pack (3008D8DG4906)
Quick view
JAM Paper 8.5 x 8.5 Square Foil Invitation Envelopes with Zip Closure, Clear, 25/Pack (3008D8DG4906)
Item #: 901-1227797JAM
Item #: 901-1227797JAM
Material: Plastic Foil
Color: Clear
Dimension: 8.5"H x 8.5"W x 0.1"D
$49.99
Per carton
($2.00/Envelope)
Add to cart
Earn 49 points
Free delivery
LUX® 5 1/2 x 8 1/8 60lbs. Square Flap Envelopes W/Peel & Press, White, 50/Pack
Quick view
LUX® 5 1/2" x 8 1/8" 60lbs. Square Flap Envelopes W/Peel & Press, White, 50/Pack
Item #: 901-282875LUX
Item #: 901-282875LUX
A8 Invitation Envelopes (5 1/2 x 8 1/8) are perfect for party invites/thank you cards/wedding invites/announcements
Comes in 60lb. White w/Peel & Press, 60lb. Text Paper
Dimensions: 5 1/2"L x 8 1/8"W
$24.99
1-2 pack
($0.50/Envelope)
Save 8%
$22.99
3+ pack
($0.46/Envelope)
Add to cart
Earn 24 points
Free delivery w/ $25+
JAM Paper 11.5 x 11.5 Large Square Invitation Envelopes, White, Bulk 250/Box (3992321H)JAM Paper 11.5 x 11.5 Large Square Invitation Envelopes, White, Bulk 250/Box (3992321H)
Quick view
JAM Paper 11.5" x 11.5" Large Square Invitation Envelopes, White, Bulk 250/Box (3992321H)
Item #: 901-1589829JAM
Item #: 901-1589829JAM
White envelope
Blank interior for personalized message
Envelope Size: 11.5" x 11.5"
$236.99
Per pack
($0.95/Envelope)
Add to cart
Earn 236 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