are these more rigid or thicker than usps flat rate mailers?

thicker yes. I think USPS mailer is 200-250GSM. I estimate they are about 300GSM material. I was hoping for 350 myself but they will work for what I need.

what pt material are they made of?

don't think there's an official grade provided by seller but I estimate they are about 300GSM material. I was hoping for 350 but they will work for what I need.

Do you think I could fit an 8x8 canvas board comfortably in these?

The mailers I have open on the long side. They would accomodate your 8x8 canvas board. The mailers are very rigid. I've re-ordered.

Are the kraft ones recyclable?

Hello there! Of course, the are made of 100% recycled fibers, and it's still recyclable. Thank you!

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Bonfasvo Rigid Mailers 30 Pack 9.5 x 12.5 inches Brown Self Seal Stay Flat Bulk Cardboard Kraft No Bend Mailers Peel and Seal for Document Photos Pictures Papers Files CD

Bonfasvo Rigid Mailers 30 Pack 9.5 x 12.5 inches Brown Self Seal Stay Flat Bulk Cardboard Kraft No Bend Mailers Peel and Seal for Document Photos Pictures Papers Files CD

Product ID: 406136501

Details

Brand
Bonfasvo
Closure Type
Self-Seal
Color
Brown
Material
Paper
Number of Items
30

📏9.5 x 12.5 inches perfect fit

📦Heavy-duty rigid cardboard

🔒Peel & seal secure closure

31610 Ft

Duties & taxes included

In stock

Sold byAmazon HungaryDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

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Description

📦 Seal it. Ship it. Impress them all.

BULK PACK CONVENIENCE - 30 mailers per pack to keep your office or home shipping game strong and ready.
EFFORTLESS SEAL SHIP - Peel-and-seal design ensures quick, damage-free packing every time.
PERFECT FIT FOR FLAT ITEMS - Ideal for photos, documents, magazines, and more—stay flat, stay pristine.
ULTIMATE PROTECTION ZERO BEND - Heavy-duty rigid mailers resist bending and tearing, keeping your documents flawless.
TRUSTED BY PROS FAMILIES ALIKE - Top-rated choice (#97 in Envelope Mailers) with 4.6 stars from 1,100+ users.

Bonfasvo Rigid Mailers come in a bulk pack of 30, each measuring 9.5 x 12.5 inches. Crafted from heavy-duty cardboard, these mailers provide superior resistance to bending and tearing, eliminating the need for extra packaging. Featuring a peel-and-seal closure, they offer quick and secure sealing to protect flat items like documents, photos, and magazines. Highly rated and trusted by both businesses and families, these mailers combine convenience, durability, and professional-grade protection.

Specifications

ASIN	B09MFGLP4Z
Additional Features	Duty】-
Best Sellers Rank	#4,118 in Office Products ( See Top 100 in Office Products ) #97 in Envelope Mailers
Brand	Bonfasvo
Brand Name	Bonfasvo
Closure Type	Self-Seal
Color	Brown
Customer Reviews	4.6 out of 5 stars 1,113 Reviews
Item Dimensions L x W	12.5"L x 9.5"W
Item Shape	Rectangular
Manufacturer	Bonfasvo
Material	Paper
Material Type	Paper
Number of Items	30
Recommended Uses For Product	Letter, Invitation Card, Cash
Size	9.5 x 12.5 Inch (30 Pack)
Special Feature	Duty】-
Style	Flat
Unit Count	30 Count

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