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Letter Size Poly Binders (Case of 100)


Our letter size plastic ring binders are made of a poly material that is more durable than traditional vinyl binders, as it wont crack or tear, and can easily be cleaned if spilled on, without damaging the integrity of the binder. This makes them an ideal choice for schools, churches, and businesses where the ring binders are handled frequently. We offer a very large selection of colors to choose from, including tinted semi-translucent options, as well as a selection of ring sizes for different capacities. You can also choose the thickness of the poly material itself, selecting from thin and flexible 20 gauge, up to thick and rigid 55 gauge. Pair these letter size ring binders with index tabs and add sheet protectors to keep your inserts safe. When you buy letter size poly binders online, please note that they are sold in cases of 100 binders and are made-to-order, so have a standard production time of about 6 - 7 business days before shipping, and are non-returnable.

PRODUCTION TIME: 6-7 business days (made to order)
NOT RETURNABLE: All sales are final.

Starting at: $141.99
Qty/Pack : 100 Pieces

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Capacity Chart

Use the capacity chart below to learn how many sheets a ring binders will hold. Note that ring binders are measured based on the ring size (inside ring diameter) not the spine width; a common misconception. So, for example, a 1" binder will actually have a larger spine, as the ring itself will be 1".

Please note that the sheet capacity below is based on standard 20 lb. bond copy paper, and will vary depending on the kind of paper stock you are using, any index tab inserts, etc. For this reason, the most accurate way to find the best ring size for your application is to measure the stack capacity. To do so, let the entire stack of pages lay loose on your table and, without pressing down, measure the thickness. Then use the below chart to determine the recommended ring binder size. If between sizes, we recommend ordering the larger size to make sure pages turn easily and to allow for growth.

Ring SizeBinder DimensionsSheet CapacityStack Capacity
1/2" Round Ring 11 ⅝" H x 9 ¾" W Covers, 1" W Spine 110 Sheets 1/4" Thick
3/4" Round Ring 11 ⅝" H x 9 ¾" W Covers, 1 ⅛" W Spine 170 Sheets 7/16" Thick
1" Round Ring 11 ⅝" H x 10 ⅛" W Covers, 1 ⅜" W Spine 225 Sheets 5/8" Thick
1 ½" Round Ring 11 ⅝" H x 10 ⅝" W Covers, 2" W Spine 310 Sheets 1" Thick
2" Round Ring 11 ⅝" H x 11 ⅝" W Covers, 2 ½" W Spine 450 Sheets 1 ½" Thick


Standard Poly Binder FAQs

Q: Can I buy smaller quantities than 100?
We manufacture our poly binders to-order because of the large variety of colors, ring sizes, and gauges available. Because these binders are made-to-order, we are unable to sell smaller quantities than 100 binders. Because of this, we can also offer competitive bulk pricing on our poly binders.


Q: What is the poly "gauge"?
Gauge is a term that refers to the thickness of the material itself. We offer thin and flexible options as well as thicker and more rigid options; take a look at the photo gallery to the left for a sample of our polyethylene (opaque colors) gauges compared with a pencil for scale. Polypropylene (tinted colors) gauges are slightly different, but look the same in photos.


Q: How does the gauge thickness compare to inches or mil measurements?
For mil, simply move the decimal point two spaces to the left. For the inch measurement, move it five spaces to the left. So, for example, a 23 gauge poly is equal to 0.23 mil or a 0.00023 inches.


Packaged Quantities

Ring Size Qty / Box
All Sizes 100 Binders

Product Description


If you have been looking for a durable ring binder but haven't found what you need with traditional vinyl or flimsy plastic binders, look no further. Considered the best binders in the industry, our poly ring binders are able to handle very heavy handling without cracking or tearing. Extremely resilient, these binders can also withstand water and other liquids without damage; this ability to be wiped clean makes them a very popular solution for hospitals and doctors offices with clean rooms, as well as schools kids may spill on the binders. Standard poly binders are built for letter size sheets measuring 8 ½" wide and 11" high with enough room to allow for the extra width from index tab dividers. They are considered environmentally friendly binders as they contain up to 75% post consumer waste (PCW), lending to their popularity.

Choose from a huge selection of colors including more traditional black or white binders, as well as brighter red binders, yellow binders, or blue binders. All opaque colored binders (colors that are not see-through) are made of polyethylene, which is available in three different gauges including light weight 23 gauge, medium weight 35 gauge, and heavy weight 55 gauge. Check out our photo gallery above to see these three thicknesses as compared to a pencil for scale, and below for information on the different gauges and what applications and what kind of users they are best for. Our tinted colored binders (semi translucent) are made of polypropylene, which comes in either a light weight 20 gauge or a medium weight 30 gauge option. Depending on the tint chosen and the thickness, the translucency may vary. In addition to the variety of colors and material thicknesses, we also offer several popular ring sizes from as small as 1/2" up to 2" for most options.

20 gauge and 23 gauge plastic binders are made of a lightweight poly that is thin and flexible. They are most commonly purchased by schools, churches, and non-profit organizations with tight budget restrictions as an economical way to organize paperwork. If you need to save on costs, but still want a durable poly material, then the 20 gauge polypropylene and 23 gauge polyethylene binders may be a great choice. For a slightly thicker option, consider the 30 and 35 gauge poly binders. They are considered medium weight and offer similar flexibility to the thin plastic binders, but with added stability and rigidity, though they are still flexible. This middle-of-the-road thickness is the most popular choice by all our customers, as it offers the perfect blend of cost-efficiency and semi-rigidity. Some of our most frequent customers include nature groups and national park sites, travelling sales people for businesses of all kinds, and more. Lastly, the thickest poly that we offer is a 55 gauge and it is only very slightly flexible to the point where you can bend it a bit, but it cannot be folded or creased by hand. This rigid plastic binder option is great for businesses that will handle the paperwork often, including hospitals and medical offices, real estate facilities, large corporate companies, and more. 

Letter size poly binders are sold in lots of 100 binders and are made-to-order. They require about 6-7 business days for production plus transit time. Because they are made special, poly binder cannot be cancelled and are non-returnable. To request a sample before you order so you can see the color, thickness, and other features, please call (866) 537-2244.

Want to add custom printing to your poly binder? No problem! We offer binder printing, custom binder sizes, adhesive pockets, and much more. Visit our custom binder page for more information, or you can call a custom product specialist at (866)537-2244 to request a price quote.

Binder Dimensions & Sheet Capacities

How to Measure a Ring Binder: For round ring binders, measure the inside of the ring diameter from one side to the other. Do not measure the spine.

Ring SizeBinder DimensionsSheet Capacity*Stack Capacity*
1/2" Round Ring 11 ⅝" H x 9 ¾" W Covers
1" W Spine
110 Sheets 1/4" Thick
3/4" Round Ring 11 ⅝" H x 9 ¾" W Covers
1 ⅛" W Spine
170 Sheets 7/16" Thick
1" Round Ring 11 ⅝" H x 10 ⅛" W Covers
1 ⅜" W Spine
225 Sheets 5/8" Thick
1 ½" Round Ring 11 ⅝" H x 10 ⅝" W Covers
2" W Spine
310 Sheets 1" Thick
2" Round Ring 11 ⅝" H x 11 ⅝" W Covers
2 ½" W Spine
450 Sheets 1 ½" Thick

* Approximation based on standard 20 lb. bond copy paper. May vary depending on paper stock.


Manufacturer Crawford Industries
Manufacturer Part Number POLYLTTR CFG
Quantity 100 Pieces
Binder Type Poly / Plastic Binders
Sheet Size Letter Size [8 ½" W x 11" H]
Wide Enough for Index Tabs Yes
Number of Rings 3-Rings
Ring Spacing 4 ¼" Between Rings [Center to Center]
Ring Shape Round Ring
Capacity Varies Depending on Size
View the Chart in the Product Description for Details
Clear Overlay Pockets None
Inner Pockets None
Boosters Yes
Rivets Exposed [Silver]
Binder Dimensions [Approximate] Varies Depending on Size
View the Chart in the Product Description for Details

Expert Reviews

Expert Reviewer: Mallory, Editor at Binding101Expert Product Review: Poly Binders  by Mallory Morsa
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Hi everyone! My name is Mallory Morsa, and I am the product expert at Binding101. I have been a part of the Binding101 team since 2008, where I started out in service and sales, learning our customers' needs and how to offer truly exceptional service. After a of couple years, I moved into a role of product management that required in-depth product research, as well as training of our staff. And in my honest expert reviews, I am proud to share that extensive knowledge with you. Take a look at the product review below, which will highlight both the pros and the cons, as well as identify the ideal customer. If you have any questions or need more information, please call our customer care team at (866)537-2244. Thank you for stopping by, and please check out our Binding101 social media channels by clicking the icons above.


Poly binders are one of our most popular products across industries of all kinds, as well as individuals. They are ideal for students and schools, traveling users, hospitals and doctors’ offices, and anyone else who needs a binder that can withstand against heavy handling.

①  Probably the most notable reason why our poly binders are such a hit is because they are inexpensive, without sacrificing quality. Starting at $141.99 for 100 binders, this means each binder can be as low as just $1.42 each. The quality is an important thing to note, because you can go to a budget dollar store and buy a plastic binder, but the plastic is flimsy (almost feels like paper) and the metal is weak (at least in my experience). Even our thinnest poly option is not flimsy like those binders. And we are happy to send you a sample to prove it!

②  There are a huge variety are options to select from! Our extensive color swatch includes different shades of gray, blue, green, red, orange, yellow, and even purple…on top of the most popular black and white binders. We even offer tinted plastic binders that are partially see-through. In addition to the colors, you can choose ring sizes from as small as 1/2” up to 2”, so you can store as many as 450 sheets (or about a 1 ½” thick stack) of paper in a single binder. The maximum ring size is a 2", which is a little limited since traditional clear view binders can go up to 4", but to keep the binders stable a 2" is the largest they can handle. Lastly, you can also choose the thickness of the poly itself, so you can have either a very flexible plastic (20/23 gauge), a medium weight flexible plastic, (30/35 gauge), or a heavy weight rigid plastic (55 gauge). We can also make super-heavy weight (75 gauge) binders custom for you.

③  They are extremely durable! Poly is a type of plastic that will resist tears and bends. So those torn spine hinges that you have to deal with when you use vinyl binders is no-more! In addition to the durable cover material, the rings are still made of steel for strength.

④  They can be customized with printing and pockets upon request. You can buy the plain binders online, but we can also print your business logo, school name, practice information, and so much more. Just call (866)537-2244 to request a price quote.

⑤  They can be easily wiped clean if spilled on, which is one of the main reason why they are preferred by hospitals, emergency rooms, doctor offices, and other medical groups, as this feature makes them safe for use in clean rooms.

⑥  The same great poly / plastic binders also come in a mini size, called half size poly binders.

①  The minimum order requirement for the poly binders is on the high end, at 100 pieces per SKU; meaning if you need 1/2" and 2” poly binders, you need to order 100 of each. We are unable to sell any quantities less than 100 binders because they are made to order. This is a requirement because there is such a huge variety of options (ring size, color, thickness) that we are unable to stock them.

②  Because these plastic binders are made to order, there is also a production time involved, which prevents the binders from shipping before a six to seven day lead time. That, plus the transit time to a specific location from the manufacturing facility, means you have to wait a few weeks to receive the binders…so be sure you order well in advance of the required date. Sometimes rush production is available, but that is determined from a large variety of factors including the current production schedule at the time of the order, the quantity needed, and more.

③  Another factor of these binders being made to order, is that there are no returns, exchanges, or refunds available, as all sales are final. For that reason, we highly recommend that you request a sample before you buy, using this sample request form or by calling (866)537-2244.

If you are obsessed with ring binders (like I am), then our poly plastic binders are a great way to organize paperwork. Their durability, fun assortment of colors, poly thickness options, and their ability to be customized with printing, make them the perfect choice for anyone, and any business.

User Reviews

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