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
  • Jar Dimensions: 5.37" wide x 9" tall x 5.37" deep; 3.88" wide/deep just above the base
  • Shipping Dimensions: 7" wide x 9.5" tall x 7" deep
  • Weight: 1.5 lbs
  • 3 year warranty
FourSide Jar is rated 4.1765 out of 5 by 34.
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 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 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 3 out of 5 by from Works great, but not for long I've been using these for over 10 years and blend about 4 times a week on average. The contents range from yogurt and fruit smoothies to heavier items like meat and vegetables. We only fill the jars to about 24 - 30 ounces and get absolutely perfect results every time with only a single blending cycle (50 seconds). However, they only last about 1-1/2 years before the seal fails and the blade doesn't turn easily. Always slightly past the 1 year warranty, of course! But as long as the blender keeps working I guess we'll keep buying the jars.
Date published: 2015-05-04
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What is the capacity for the of the jar with the classic 570 model

Asked by: Tillie
The WildSide+ jar comes with the Classic 570. The WildSide+ jar has a 90 oz capacity with measurements up to 36 oz* *We recommend that the finished blended product stays at or below this line.
Answered by: Blendtec
Date published: 2015-10-01

how long is the warranty on this jar

Asked by: Sunni
If purchased a la carte, it has a 3-year warranty.
Answered by: Blendtec
Date published: 2015-09-11

The wildside jar is more expensive. Is that just because it's bigger? Is it any better than the 4 side?

Asked by: dmlj
The Wildside+ jar is an upgrade in every way. It does hold more but also has a stronger vortex to bring the food back down to the blade faster and more efficiently, with the end result being a more consistent blend. This happens due to the blade being longer, along with the patented extra fifth "Wild" side and two vertical ridges on the interior walls. Smoothies inevitably can be made using a little less liquid because of this upgraded design.
Answered by: AdamBlendtec
Date published: 2015-08-31

Is this (the four sided jar) BPA free? We have a 7 year old Blendtec, is the jar it came with BPA free? Love the blender, one of our best investments!

Asked by: Lendash
You would have purchased your blender during the transition from non-BPA free to BPA-free. We could tell you for sure if we had a picture of the jar. Our current jars are all BPA-free.
Answered by: Blendtec
Date published: 2015-08-31

We use our BlendTech to juice complete veggies and use turmeric everyday. the blender is stained and is starting to smell like "older veggies".How do we clean it safely?

Asked by: Nancy Maloney
Here are some suggestions: 1. Fill the jar with hot water. 2. Add 1-2 teaspoons of liquid chlorine bleach. 3. Stir for 10 seconds to mix water and bleach. Let mixture stand in jar for 5 minutes. 4. Empty water/bleach mixture. Turn jar upside down on dish rack until dry. Others have found success with: - Add the juice of 1 lemon, 2-3 tbsp of baking soda, and some water to jar. Run on a high speed for about 10 seconds, pour the water out and scrub with a non-scratch sponge. - Vinegar mixed with baking soda and some water will also work. Run on a high speed for about 10 seconds, pour the water out and scrub with a non-scratch sponge. - Add 1-2 tbsp powdered dishwasher detergent dissolved in 1-2 cups hot water, let soak for 1 hour. Then, scrub with a non-scratch sponge. - Combine Lemi Shine® Original with some powdered dishwasher detergent and let soak in the jar for 20 minutes.
Answered by: Blendtec
Date published: 2015-08-27

Whats the difference between jar model 40-615-50 and 40-630-50?

Asked by: blendy
Model 40-615-50 is our discontinued WildSide jar, and 40-630-50 is our new WildSide+ jar. The WildSide+ jar features two vertical ridges on the interior walls to disrupt the blending pattern even further and accelerate the blend.
Answered by: Blendtec
Date published: 2015-07-24

Hi, I looked at the dimensions of each jar as listed on your site (under  "Specs") for each jar. The Fourside and the Wildside+ are both listed as 7" wide x 9.5" tall x 7" deep. Is this an error? I thought the Fourside was smaller.

Asked by: MissJelic
Those dimensions are the dimensions for the box that the jars come shipped in. However, the dimensions of the width and depth of the top of the jars as well as the height are all the same. It's the contour of the jars that is different and makes the WildSide+ jar larger. If you look at images of the jars, you can see the different shape. Hope this helps!
Answered by: BlendtecJess
Date published: 2015-07-07

Does blendtec have plans to r&d the leaking seal issue and fix it? This is not a logical product to purchase if there is no plan to fix this issue.

Asked by: Mickeydee
We are working hard to resolve this issue. In the meantime, our warranty covers our jars for any issues you may encounter.
Answered by: Blendtec
Date published: 2015-08-04
  • 2015-10-06T08:21CST
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