Your cart is empty.
Your cart is empty.Product Description
Corrugated Cardboard: The Ultimate Packaging Essential
Since 1921, we’ve provided packaging essentials for every need. From heavy duty boxes for shipping to flexible sheets for cushioning, we have the corrugated collection for you.
Standard RSC Corrugated Boxes
Corrugated Cardboard Sheets
Chipboard Sheets
Corrugated Cardboard Facts You Need To Know
Corrugated - What Does It Mean?
Corrugated cardboard is a thick material made up of three primary layers. The first and last layers are usually seamless and flat while the middle layer is stiff with an arched fluted shape.
Quality Construction
Quality construction is a huge priority. We source cardboard products made of extra durable corrugated and offer designs made to support contents of all shapes and sizes.
32 ECT vs. 200# Test
Find your perfect box with 32 ECT or 200# Test cardboard types. If you anticipate a lot of wear and tear during shipping, consider a 200# box. If you’re stacking boxes onto pallets, use a 32 ECT box.
Things To Remember: Inside Dimensions & Usable Space
When you’re shopping around for boxes, remember that the measurements listed are the inside dimensions (aka. usable space). Inside dimensions indicate the space available to your item for a comfortable and safe fit.
Packaging Basics: Wrap & Cushion To Protect
When packing breakable items, provide support on all sides with material flexible enough to get into tight spaces and durable enough to cushion. Consider materials like crinkle cut, bubble wrap, or foam sheets.
Natural Packaging Matters
Natural packaging is more than just a consumer trend. That’s why we provide a selection of packaging products that are made of natural materials.
Cliff West
2025-08-28 10:54:20
Nice product and protected well for shipping.
Roxies_Dad
2025-08-07 19:21:49
Three things about these cardboard sheets (review: January 20, 2021, 30 count, 24" x 36" sheets). First: they were properly packaged -- all 30 sheets were in very good condition (a few snubby corners, but all sheets still quite usable). The smackaging was good! Second: they arrived quickly -- in-hand 3 days after ordering. Third: they are expensive. All-in-all, a thumbs up!
R. Christenson / Lunamation
2025-07-23 17:10:33
I'm using these to protect comic books mailed in envelopes, and they seem to work fine. They have the corrugated lines going the short way so they may bend a little easier than those with the lines going lengthwise, but they are thicker than one's I've had before which were lengthwise corrugated, so that balances out. They're a little shorter too, but still longer than any comic book, so I've had not problems so far.
Mountain Mama
2025-07-17 09:32:44
We ordered these cardboard sheets for packaging art prints to sell. They are lovely sheets of cardboard. Flat. Square. Brown. Approximately 1/8" thick. They worked great for packaging art prints, except for one small problem: 10 of them were too damaged to use. If I mention how they sustained this damage, this review will not be published (ask me how I know!), so I will just tell you they were not damaged in transit but rather by something that rhymes with "smackaging." This faulty smackaging caused 20% of the cardboard sheets to be bent, creased, and unusable.Now, you may be asking yourself, "Why the four-star rating if there was a smackaging issue that damaged 10 of 50 cardboard sheets?" Well, I will tell you. I originally wrote a two-star review which (apparently) violated this website's comment policies. It seems corporations are not bound by the First Amendment and do not have to grant their reviewers freedom of speech or the press. Instead, they make up vague and arbitrary rules like: "You are not allowed to talk about the seller or the shipment! You are only allowed to talk about the product! Even if the seller uses a type of packaging that damages the product! Just tell the other customers about the damaged product but DEFINITELY DO NOT mention how it came to be damaged!"Anyway, I digress. With my attempt at leaving a two-star review thwarted, I just settled for the boring option of contacting a party which shall not be named but possibly rhymes with "the speller." This unnamed party was very responsive and granted me something that rhymes with a "dull defund," which I was not expecting. I will probably reorder these beautiful cardboard sheets next time we need to package some art prints, in the hope that this speller has its smackaging issues resolved.Bottom line: four stars for my overall experience with these cardboard sheets, and zero stars for censorship. This is America! We should have something that rhymes with "speedom of bleach!" Even if it's just to complain about smackaging.
DFargo
2025-07-15 16:06:35
This is a great product as I use these for shipping photos to not get bent. These are thick enough to use one with the addition of acid free cardboard backing I use in the photo bag with the photo and they hold up well. If you do not have the added backing then 2 would really protect what you are sending. I have used other products on Amazon at very similar price and even with 2 you could not protect anything while shipping. These backings by Paper Mart are just what i needed. Ordered twice and will continue to order as long as they remain the same.
JCJ
2025-05-16 14:13:59
I ship a lot of original art & prints so these are great to keep things steady. Then I supplement with a box around it and then a padded envelope.
Melissa Wynne Designs
2025-05-05 09:52:24
I use these to back 16x20 Prints I create and sell - I like to ship flat instead of rolled, so I need something that wont bend in shipping but also looks good. Its brown cardboard, but its cut pretty clean, straight lines and no fraying. Ive purchased these about 8 times and will continue to.
Lorisha
2025-02-18 14:54:36
These are packaged great so they come in pretty much perfect condition! I use them for inserts to stiffen packages I mail but they would work great for craft projects too since they come packaged correctly!
Recommended Products