The Original Square Jar

The FourSide jar effectively harnesses the power of your Blendtec blender.

  • Blunt safety blade is thicker and stronger than other blades/li>
  • Made from impact-resistant, BPA-free copolyester
  • Compatible with all Blendtec consumer blenders

The FourSide is ideal for:

  • Ice cream
  • Grinding grains
  • Soups
  • Smoothies
  • Dips and Batters

The FourSide jar’s square shape blends much better than traditional round jars. The jar also generates more friction, heating soups and hot drinks quickly and easily. It’s also especially good for grinding grains and making smaller quantities.

  • Capacity: 75 oz, with measurements up to 32 oz
  • Dimensions: 7" wide x 9.5" tall x 7" deep
  • Weight: 1.5 lbs
  • 3 year warranty
FourSide Jar is rated 4.2273 out of 5 by 22.
Rated 3 out of 5 by from good jar This is a good jar (the 4-side jar), I bought it to replace an older one that had many miniscule scratches in it and now stains easily. I will still keep the old as a back up, but it's nice to have a new, clean-looking jar again. The jar performs great, and I like the new lid (with easy access port), but I would REALLY like the option of buying either a stainless steel jar or a glass jar from Blendtec. If you guys at Blendtec ever get a glass or stainless steel option, I'll definitely buy one!
Date published: 2014-10-07
Rated 3 out of 5 by from Grinding sugar into powder I love the blend! Just wish you had a feature that I could use to help me grind my sugar into powder. It does a fantastic job except now the container leaks causing the plastic on the bottom around the impeller melted. Due to the friction in the grinding process because the sugar is so hot when grinding. Is there a container that can help me grind my sugar? It's one of the key ingredients in my chocolate business. Please help me. I only had the blender for few years maybe 2 years and just start my business a year and I already need a new container.
Date published: 2014-08-19
Rated 5 out of 5 by from Love the Four Side Jar! I bought my Blendtec with the Wildside Jar on sale at Costco last year and, while I have loved the operation of the blender, sturdiness and ease of cleaning, the bigger jar wasn't designated for some of the recipes and smaller amounts I wanted to use. Since getting the Four Side jar, I find I use it all the time with all the recipes I want!
Date published: 2014-07-30
Rated 4 out of 5 by from Liked old lid better I had to get a replacement blender jar as the old one started to leak after 600 uses. When i got the new jar, i noticed the lid is not completely closed and it comes apart in two pieces. This is harder to clean this way. The jar handle also is not solid its hollow so stuff can get stuck on inside of it. Im noticing the blades just are not fully blending frozen bananas in smoothies n i have to pulse it a few times after the cycle is done.
Date published: 2014-09-05
Rated 2 out of 5 by from I got a replacement because my jar was leaking The new one maker so much noise that I am sure there is something wrong with it I would appreciate if you send me another one Besides I don't think I should have been charged for the replacement since that problem is a flaw in the design I like the blender but it is becoming a problem
Date published: 2014-06-28
Rated 4 out of 5 by from "We hope you'll write about your FourSide Jar while it's still fresh on your mind." Actually its fresh on our minds daily, since that's how we use it. Would prefer it be made of glass...
Date published: 2014-07-18
Rated 5 out of 5 by from Perfect smoothie maker! We received our much anticipated Four Side jar a few days ago, and have used it nearly every day to make smoothies. It works nearly flawlessly, and I say nearly only because if you add too much frozen and solid ingredients, it will fail to blend without tamping down the mixture. This has only happened twice, however, and with a quick tamp, a perfectly blended concoction emerged!! Love this blender, an this Four Side jar!!
Date published: 2014-07-06
Rated 4 out of 5 by from Improved from original I have had this replacement for over 4 months and it is performing well. I like the improved top with the larger pop out which allows for stirring. I think the gasket issue needs to be work on more, but no issues with that as yet.
Date published: 2014-06-28
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Does this 4-sided jar that can be purchased here fit the Commercial Q Series, or do I need to order from a dealer?

Asked by: JudyJolley
We recommend you order from a dealer.
Answered by: Blendtec
Date published: 2015-04-17

I need to replace my blend tec jar. It is part # 40-505. What jar replaces this one?

Asked by: Matea
The FourSide and WildSide+ jars will both fit on your model.
Answered by: Blendtec
Date published: 2015-04-01

Hi. I have ICB3 spacesaver( SS312V-19177) for restaurant. The jar's leaked a couple of days ago. Is it still in warrant or do I have to buy new jar? Plz give me the email ASAP. Thanks

Asked by: josh413
If your commercial jar is having an issue, Customer Service can help you determine if it is still under warranty. You can call 1-800-253-6383 or email us by going to this link:
Answered by: AdamBlendtec
Date published: 2015-03-27

I have a Blendtec model ES-3 ES-black, serial number EZ/b-25039 I need to replace the jar, which one will fit my blender 

Asked by: Alfredo
Yes, this jar will fit your model.
Answered by: Blendtec
Date published: 2015-03-26

I have a Blendtec Jar called Blendtec home, it about 7 years old. Will this Jar fit my blender? If not which one do I need . Thanks

Asked by: BallaBalla
Yes, this jar will fit your model.
Answered by: Blendtec
Date published: 2015-03-26

Will this work with my Smoother13?

Asked by: harry
Yes, the Fourside jar will work with the Smoother 13.
Answered by: AdamBlendtec
Date published: 2015-03-24

Our restaurant is needing uses a jar that is leaking at bottom. Is best option to replace entire jar or are there gaskets one can buy? The BlendTec base states that it fits ICB 3 & 5 as well as ABC 3 & 5. If replacing the jar, what jar is the one to buy

Asked by: Dantes
The jar may be under warranty. ICBs and ABCs are models of motor bases and all of our jars, both commercial and residential, fit on all of our motor bases. If a jar is malfunctioning, we would replace the entire jar. You can call customer service at 1-800-253-6383 for us to help determine warranty and provide options for the best jar to buy if out of warranty.
Answered by: AdamBlendtec
Date published: 2015-02-23

is the four sided jar the right one for a blendtec total blender model ES3?

Asked by: Mushbush
Yes, the FourSide jar will work with your blender. The WildSide+ jar, Twister jar, and Mini Twister jar will all work with this model as well.
Answered by: Blendtec
Date published: 2015-02-18
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