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  • Image 1
  • Solid Side Panels
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  • Shown with cut-out bottom chassis section and 120.3 fan hole mid-plates
  • Shown with solid bottom chassis section and solid mid-plates
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  • HPTX Interior
  • XL-ATX Interior
  • XXL Window Door
  • Ventilated Door
  • Solid Door
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  • Drive cages Top: HDD x2, Middle: 3.5'' bay device, Bottom: SSD x4
  • Silverstone USB 3.0 device installed in the 3.5'' device cage.
  • View from top looking down
  • Ventilated Top Cover
  • Solid Top Cover
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  • 140.4 Drop-In Mount
  • 120.4 Drop-In Mount
  • 120mm Extended Ventilated Top Cover
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  • 140.4 radiator installed on a 140.4 Side Mount
  • 120.4 radiator installed on a 120.4 Side Mount
  • Radiators installed in upper and lower chambers
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  • Matte White finish
  • Matte White finish
  • PCI Backplate  -   Hex-Mesh (left)   Fan Hole (right)
  • Color Options


Calculated at checkout

Product Description

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Case Features:

All Aluminum Construction
The Flex-Bay System
The Accessory Mounting System
Removable Motherboard Tray and Mini Tech Station
Quick Release Exterior
Drop-in Top Radiator Mounting
Side Radiator Mounting
Cooling Chambers
Mod Friendly Chassis
Anti-Vandal Switches with Black Sleeved Cables



Technical Specs  
Base Price (US Dollars) $659.95
Flex-Bays (5.25 bays) 17
PCI Slots 10
Motherboard tray size (width x height) XL-ATX: 10.63” x 13.69" (270 x 348mm)     HPTX: 15.13" x 13.69" (384mm x 348mm)
Native HDD Locations 2
Native SSD Locations 4
Total possible HDD locations with extra HDD cages (using additional mounts, purchased separately) 22
Total possible SSD locations with extra SSD mounts (using additional mounts, purchased separately) 48
PSU Mounting locations 4
Weight (Pounds) 32 lbs
Optional Front I/O Panel (3.5'' bay mount)
Compatible Motherboard Form Factors  
mATX Yes
E-ATX (dual CPU) HPTX option: Yes
HPTX HPTX option: Yes
SSI-EEB HPTX option: Yes

Exterior (width x depth x height)

(dimensions shown are for the case only. Rubber feet add .75’’ (19mm) to height, optional standard casters add 2.6’’ (67mm) and HD Casters add 3’’ (76mm))

11.25" x 26.56" x 32.25" (286m x 675mm x 819mm)
Upper chamber (width x depth x height) 9.70" x 26" x 6.41" (246mm x 660mm x 163mm)
Lower chamber (width x depth x height) 9.70" x 26" x7.41" (246mm x 660mm x 188mm)
Motherboard chamber dimensions (width x depth x height) 7.60" x 26" x 17.44" (193mm x 660mm x 443mm)
Span between installed radiator mounts in Isolated Cooling Chambers (In a push/pull configuration, one bank of 25mm thick fans sits on the outside of the radiator mount, and is irrelevant when calculating radiator fitments) 217mm
Cooling Tower Clearance (air cooler) 180mm


Note: Exterior dimensions shown are for the case only. Rubber feet add .75’’ (19mm) to height, optional standard casters add 2.6’’ (67mm) and HD Casters add 3’’ (76mm)


 ** "E-ATX" motherboards such as the ASUS RAMPAGE V EXTREME will fit in this case with the XL-ATX option. E-ATX motherboards such as the Supermicro H8DG6 will not fit in this case with the XL-ATX option. Please cross reference the motherboard tray size with the motherboard dimensions from the manufacturer.




Case Features and Included Accessories  
All Aluminum construction Yes
Flex-Bay System Yes
Accessory mounting System Yes
Quick Release Exterior Yes
Flex-Bay 5.25 Device Mounts - Standard (MAC-125) 4 sets
Integrated Radiator Mounting (beyond 120.1/140.1) -
Drop-in Top Radiator Mounting Yes (optional)
Side Radiator Mounting Yes (optional)
Isolated Cooling Chambers Yes
Reversible Yes (with kit)
Slide out motherboard tray with tech station conversion kit Yes
Anti-Vandal style power and reset switches with MDPC-X sleeved cables Yes
Compatible Radiator Sizes (may require additional mounts)  
120.1 - 120.2 (120 - 240) Yes
140.1 - 140.2 (140 - 280) Yes
120.3 (360) Yes
140.3 (420) Yes
120.4 (480) Yes
140.4 (560) Yes
120.9 (1080) -
140.9 (1260) -
180.3 (540) -
180.4 (720) -
Shipping Format: Domestic  
Flat Packed Yes
Fully Assembled -
Shipping Format: International                  
Flat Packed Yes
Fully Assembled -





The STH10 was designed without a fixed I/O panel for the front. Instead, we created a 3.5'' bay mount directly under the switches. Now you have the freedom to have any type I/O panel you like or none at all! The switch assembly includes two switch plates, a solid version and one with a cut-out for your 3.5'' device. 

We offer this 3.5'' device wih USB and HD audio. We can even color match it to your CaseLabs case!


Product Reviews

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Showing reviews 1-10 of 43 | Next

  1. THE GIANT !!!

    Posted by Amal Alsulami on 7th Nov 2015

    Highly recommended if you want to using it as a Water Cooling ! JUST

    Excellent build quality.

  2. Happy STH10 owner

    Posted by PvL on 8th Sep 2015

    After 2 years of watching pictures, drewling over youtube videos and saving every penny, I now have my STH10.
    All reviews on here say the same, so no need to tell you that this case is (one of) the best one on the market.
    It's like having a Italian Sportscar, I now have a Caselabs case, no need to elaborate more.
    But a few words:
    Case: Phenominal (build and freedom)
    Caselabs team: Customer service is outstanding
    Fair enough, you have to wait a few weeks for the case to arrive, but this is the safe with bespoke furniture, cars etc
    10 stars if I could :)

  3. Effortless Water Cooling

    Posted by Chris D on 15th Aug 2015

    You get what you pay for and this is no exception. While CaseLabs is certainly expensive compared to other (uncomparable) options the quality and ease just can not be argued.

    My main reason for upgrading to such a premium case was I was tired of the maintenance struggles with my custom water cooling loop. Even if the other cases had the room I wanted there were very limited options for making flushing or cleaning the loop less of a chore.

    Upon separating the parts the first thing I noticed is how much of a difference the aluminium construction makes. There are certain pieces I started tapping because they felt s light I had to question whether they were metal or not. This means that despite the size of the case it is really light on its own. Even after I fully built the machine with 3 480 radiators and a 240 Radiator the biggest challenge for me to lift it alone was the size and not the weight itself. In fact I am fairly certain it is lighter than my last Full Tower Case despite being 25-50% larger.

    The bottom compartment became quite cluttered between a 480 and 240 Rad, a pump and a PSU but even then it was not overly difficult to fit all of the components, the tubing, wiring and draining system without too much effort.

    The top compartment by comparison is barren with perfect airflow between two 480 Radiators.

    The only thing that I can say which really shocked me was just how big the case is. I knew the case was big when I ordered it but the pictures and the specs sheet just do not give due credit to the massiveness of this case. If you are looking to buy this case build a cardboard box with the sepcs sheet to get a true visual representation of what you are buying.

    That is by no means a complaint! If it wasn't for the massive size I would not have been able to do everything I wanted and more as effortlessly as I did it. This is more a warning to make sure you know what you are getting in to because the case is larger than the TV's in many family households and obviously several times as thick.

    If you plan on watercooling and want as much in case real estate as possible this is a perfect case. And I do mean perfect. If the size is a little too much then I would happily recommend the Magnum SMA8 instead as it is this case, more or less, without the upper compartment which is a substantial part of the size.

    If you have the budget and are an enthusiast then in my opinion it is worth every penny to invest in a CaseLabs case.

  4. overall great product

    Posted by mike hoang on 27th Apr 2015

    This case was definitely well made. Everything was nicely packaged and I would definitely buy from caselabs again. I am giving it a 4 out of 5 because the instructions could be better and more detailed. Also if you buy a 700 dollar case wheels shouldn't be separated, but included. Same with some other accessories like dust filters. I had to purchase mine somewhere else. Overall I am a very happy customer and caselab knows what they are doing.

  5. Only Just the beginning

    Posted by Unknown on 23rd Mar 2015

    I have recieved and built my magnum STH10, and nothing could have been better! Though I am not able to speculate on the full potential yet without having most of the hardware going inside as of yet... There remains so much potential and possibility with all of that space in such a well built case. If I ever build another pc it will rest inside another CaseLabs computer case without a doubt.

  6. Brilliant Case

    Posted by Unknown on 5th Feb 2015

    Its just the best case i have ever bought.

    It Looks amazing and neet. It is big and has a ton of diffrent Options. Best case for wathercooling.

  7. Best Tower PC Case ever, Bar None

    Posted by FJ on 26th Jan 2015

    Im just going to jump striahgt to the point and say, this is the king of single system PC cases ever made. The case was well thought out from the design to the build quality to the packaging. However, this case is not for everyone. This is a modder's case. This is only for those who demand the best of the best, a chassis that have everything which gives them the freedom to do whatever they want.

    Excellent build quality
    Unprecented amounts of flexibility
    Nice clean asetheics
    Supports large amounts of storage devices
    Supports large amounts of watercooling gear with optional brackets
    Supports crazy amounts of PSUs "around 6 or maybe more"
    Ample space behind the motherboard tray for cable management or mounting drives
    Supports high end hardware like dual socket Xeon class motherboards
    Excellent cooling potential for Air, Liquid or even with Phase Change units


    When I bought this case to replace my 900D, i did not expect it to be this awesome. A few issues I think that should be addressed is that the option for the large acrylic window mades the door very flimy and I would like if Caselabs were to use thicker aluminium for the door or design some renforcement brackets for the door. The bottom cover panel is also a little flimy but it should not be a big of a deal but i love appreciate it if they were to address this issue. The price will sting, however, if you want the best of the best, nothing even comes close to it.

  8. !

    Posted by Vern on 20th Jan 2015

    I want to know where I could buy dust filter
    in Australia?.

    [CaseLabs: DEMCiflex is a popular choice for filters are usually available from a wide number of on-line retailers. Thanks!]

  9. One of the best on the market!

    Posted by Gary Murphy on 29th Oct 2014

    I have built several computers over the years with Antec and Corsair (800D and 900D) cases. This case blows them away all away. The lightweight aluminum construction is solid and easily assembles in minutes. The choice of paint finishes allows you to customize it to your needs without the extra effort of prepping it for paint. A definite winner in all aspects!!

  10. Wow

    Posted by John Fox on 4th Oct 2014

    Every detail has been thought about and reviewed. The packaging and even the end waste materials are even impressive (just a ball of tape). Everything comes individually wrapped, labelled, and sorted. The caster kit is in its own bag, with its own screws. The flex bay items are in their own bags, with their own screws separated per item. You might think that if you had the skills, the materials, and the time that you could make one better yourself...but I think you'd be in for a rude surprise.

    You can read plenty of reviews, see videos, and pictures, but it simply will not describe the quality of this product. Even when parts of the case hit the table/floor they give a satisfying "thunk" and not a "clink". As seen in the video review by Tim Logan of OC3D ( there are endless possibilities of how to use this case. It is not a question of what you can do, but what you cannot do. Caselabs offers mini ITX cases all the way to the TX-10D which can easily fit two massive computers in it (if not more).

    I admit that I am new to the case modding scene, heck, even the water cooling scene. I like to plan, research, and think long term about whatever I do. I cannot imagine how a case would be higher in quality, made by any human means.

    Well done CaseLabs, I will be back for more.


    P.S. - If you want to research more for yourself, get ready for a data dump:

    Sites with good information (I will undoubtedly be missing a few): (also has the official case labs forum with TONS of info)

    Written reviews of the STH-10

    Other Caselabs reviews (see this site's links also)

    Build Log Compilation and Owner's Thread

    900D vs Cosmos II vs Other vs Caselabs - Yes there are a few ultra towers from good brand companies that make ultra towers or other high end products aimed at the same people who might buy case labs. At the end of the day, its up to you how you will spend your money, but I cannot see anyone compete with Caselabs for quality, flexibility, and potential at the base product.

Showing reviews 1-10 of 43 | Next

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