Skip to main content Skip to footer
Shop our full range of education supplies.
$10 off when you spend $100
Save 5% with Rewards+
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)
Clear (21)
Brown (18)
Gray/Silver (13)
Blue (11)
Yellow (8)
Gold (7)
Beige (11)
Green (9)
Pink (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 (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
50 Per Pack (91)
25 Per Pack (51)
250 Per Pack (38)
500 Per Pack (60)
1000 Per Pack (28)
100 Per Pack (17)
All filters
Sort by:
Best matchPrice: High-LowPrice: Low-HighRating: High-Low
All filters 293 items found
JAM Paper 10 x 10 Large Square Invitation Envelopes, White, 25/Pack (3992319)JAM Paper 10 x 10 Large Square Invitation Envelopes, White, 25/Pack (3992319)
Quick view
JAM Paper 10 x 10 Large Square Invitation Envelopes, White, 25/Pack (3992319)
Item #:901-261308JAM
$26.29
Per pack
($1.05/Envelope)
Earn 26 points
Free delivery
Add
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
$139.29
Per box
($0.28/Envelope)
Earn 139 points
Free delivery
Add
JAM Paper 8.5 x 8.5 Square Strathmore Invitation Envelopes, Bright White Wove, 25/Pack (900858534)JAM Paper 8.5 x 8.5 Square Strathmore Invitation Envelopes, Bright White Wove, 25/Pack (900858534)
Quick view
JAM Paper 8.5 x 8.5 Square Strathmore Invitation Envelopes, Bright White Wove, 25/Pack (900858534)
Item #:901-262536JAM
$25.99
Per pack
($1.04/Envelope)
Earn 25 points
Free delivery
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
JAM Paper 7 1/2 x 7 1/2 Square Envelopes, Smoke Gray, 250 Pack (EX8555-22-250)
Quick view
JAM Paper 7 1/2 x 7 1/2 Square Envelopes, Smoke Gray, 250 Pack (EX8555-22-250)
Item #:901-24578452
$170.99
Per pack
($0.68/Envelope)
Earn 170 points
Free delivery
Add
JAM Paper 7 1/2 x 7 1/2 Square Envelopes, Ruby Red, 50 Pack (EX8555-18-50)
Quick view
JAM Paper 7 1/2 x 7 1/2 Square Envelopes, Ruby Red, 50 Pack (EX8555-18-50)
Item #:901-24578461
$14.99
Per pack
($0.30/Envelope)
Earn 14 points
Free delivery w/ $25+
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
JAM Paper 11.5 x 11.5 Large Square Invitation Envelopes, White, 50/Pack (3992321I)JAM Paper 11.5 x 11.5 Large Square Invitation Envelopes, White, 50/Pack (3992321I)
Quick view
JAM Paper 11.5" x 11.5" Large Square Invitation Envelopes, White, 50/Pack (3992321I)
Item #:901-1588470JAM
$68.29
Per pack
($1.37/Envelope)
Earn 68 points
Free delivery
Add
Lux® 5 1/4 x 7 1/4 60lbs. Lined Envelopes W/Peel & Press; White/Gold LUX Lining
Quick view
Lux® 5 1/4" x 7 1/4" 60lbs. Lined Envelopes W/Peel & Press; White/Gold LUX Lining
Item #:901-282845LUX
$21.89
Per pack
($0.44/Envelope)
Earn 21 points
Free delivery w/ $25+
Add
LUX® 70lb 4 1/4x6 1/4 Square Flap Envelopes W/Peel&Press; Grocery Bag Brown, 500/BX
Quick view
LUX® 70lb 4 1/4"x6 1/4" Square Flap Envelopes W/Peel&Press; Grocery Bag Brown, 500/BX
Item #:901-516309LUX
$82.29
Per box
($0.16/Envelope)
Earn 82 points
Free delivery
Add
JAM Paper 5.5 x 5.5 Square Invitation Envelopes, White, 100/Pack (28415B)JAM Paper 5.5 x 5.5 Square Invitation Envelopes, White, 100/Pack (28415B)
Quick view
JAM Paper 5.5 x 5.5 Square Invitation Envelopes, White, 100/Pack (28415B)
Item #:901-261318JAM
3
(2)
$54.59
Per box
($0.55/Envelope)
Earn 54 points
Free delivery
Add
JAM Paper 6 x 6 Square Foil Lined Invitation Envelopes, White with Gold Foil, 25/Pack (3244689)JAM Paper 6 x 6 Square Foil Lined Invitation Envelopes, White with Gold Foil, 25/Pack (3244689)
Quick view
JAM Paper 6 x 6 Square Foil Lined Invitation Envelopes, White with Gold Foil, 25/Pack (3244689)
Item #:901-262779JAM
5
(2)
$14.99
Per pack
($0.60/Envelope)
Earn 14 points
Free delivery w/ $25+
Add
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
$27.99
Per pack
($0.28/Envelope)
Earn 27 points
Free delivery
Add
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
$170.19
Per pack
($0.68/Envelope)
Earn 170 points
Free delivery
Add
JAM Paper Square Envelopes, Peel & Press, Seafoam, 3 1/4 x 3 1/4, 250 Pack (8503-113-250)
Quick view
JAM Paper Square Envelopes, Peel & Press, Seafoam, 3 1/4 x 3 1/4, 250 Pack (8503-113-250)
Item #:901-24578557
$42.99
Per pack
($0.17/Envelope)
Earn 42 points
Free delivery
Add
JAM Paper 6 x 6 Square Strathmore Invitation Envelopes, Bright White Wove, 25/Pack (900958831)JAM Paper 6 x 6 Square Strathmore Invitation Envelopes, Bright White Wove, 25/Pack (900958831)
Quick view
JAM Paper 6 x 6 Square Strathmore Invitation Envelopes, Bright White Wove, 25/Pack (900958831)
Item #:901-262535JAM
$25.99
Per pack
($1.04/Envelope)
Earn 25 points
Free delivery
Add
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
$19.39
Per pack
($0.39/Envelope)
Earn 19 points
Free delivery w/ $25+
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 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
$25.99
Per pack
($1.04/Envelope)
Earn 25 points
Free delivery
Add
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
$26.49
Per pack
($0.53/Envelope)
6% off on 3+ units
Earn 26 points
Free delivery
Add
JAM Paper Square Envelopes, Peel & Press, Garnet, 6 x 6, 50 Pack (8525-101-50)
Quick view
JAM Paper Square Envelopes, Peel & Press, Garnet, 6 x 6, 50 Pack (8525-101-50)
Item #:901-24578466
$14.99
Per pack
($0.30/Envelope)
Earn 14 points
Free delivery w/ $25+
Add
JAM Paper Square Envelopes, Holiday Red, 6 1/4 x 6 1/4 , 50/Pack (8530-20-50)
Quick view
JAM Paper Square Envelopes, Holiday Red, 6 1/4 x 6 1/4 , 50/Pack (8530-20-50)
Item #:901-24578533
$14.99
Per pack
($0.30/EACH)
Earn 14 points
Free delivery w/ $25+
Add
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
$327.99
Per box
($0.33/Envelope)
Earn 327 points
Free delivery
Add
LUX® 70lb 5 1/2x5 1/2 Square Flap Envelopes W/Peel&Press; Ruby Red, 1000/BX
Quick view
LUX® 70lb 5 1/2"x5 1/2" Square Flap Envelopes W/Peel&Press; Ruby Red, 1000/BX
Item #:901-514224LUX
$199.69
Per box
($0.20/Envelope)
Earn 199 points
Free delivery
Add
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

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