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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
  • XL Window Door
  • 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
  • Image 34
  • 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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  • Image 43
  • Matte White finish
  • Matte White finish
  • PCI Backplate  -   Hex-Mesh (left)   Fan Hole (right)
  • Color Options


Calculated at checkout
Use to specify two tone color scheme if selected :

Product Description

Have a question? Just email us at

**Important Please Read**

* If you are unable to retrieve a shipping quote, please click here.

* If the two tone option is selected, please specify which parts of the case are to be painted with each color. It is okay to specify the parts for one color with the assumption that the remaining parts are to be the other color.

* The STH10 is only available “flat-packed” (unassembled) unless local pickup (will call) is selected. If will call is selected, and you want the case assembled, please make the request in the order comments.

* Radiator mounts are not included.

* As of November 11th 2014, the XL-ATX option will include mounting points for a reservoir mount on the divider wall beside the cable management holes. The mount is additional and can be found here

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) $599.95
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) 22
Total possible SSD locations with extra SSD mounts (using additional mounts) 48
PSU Mounting locations 4
Weight (Pounds) 32 lbs
Optional Front I/O Panel (3.5'' bay mount)
Compatible Motherboard Form Factors STH10
mATX Yes
E-ATX (dual CPU) HPTX option: Yes
E-ATX (Revision-M) HPTX option: Contact us
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 39 | Next

  1. 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.

  2. 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.

  3. 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.

  4. !

    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!]

  5. 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!!

  6. 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.


    Posted by ali on 26th May 2014

    I got this case as an upgrade from an M10 case,need more room,i was lucky to pick one up here in the UK,it was a reverse version(my first one),so I got the platform/pedestal and top panel as an order,(in white by the way)now I have 3 chambers to fill,which was very hard,top and pedestal I used for rads,middle for power supples,the motherboard area is massive,i put E-ATX board and 4 cards in and it looks tiny,half the area used,i was easy to build,all the parts marked,now the case stands 48" tall,the case is so well maded,it well last for years,i am very happy with it,AWESOME.

  8. Freedom!

    Posted by F.J on 2nd Feb 2014

    I have seen so many pictures and now I have it. The design is so spectacular and the craftsmanship is amazing. The powder coat is robust and adheres. All holes are carefully drilled and countersunk.

    Engineering went into this case no cutting corners. I just cannot believe I didn't know about caselabs before :).

    Once again 10/10.

    Thank you to the caselabs team :)

  9. Absolutely Brilliant, flexible and Well Made Case

    Posted by Marco on 11th Dec 2013

    I ended up going for the CaseLabs STH10 case after going thorugh a few Lian Li cases previously, which were good cases, but not a patch on the STH10. It's great to have a case that maeks concealing a water cooling system so easily, and while it's doesn't have to look all 'blingy' in a '12 year old Ritalin induced Call of Duty' kinda way.

    If I ever have to replace my main case the next one will be a CaseLabs case too!

  10. Great Case

    Posted by Pat on 5th Dec 2013

    As stated this is a great case. The build quality is truly superb and assembly was relatively easy. This case has more than ample room for pretty much any build you can imagine.

    Expensive but more than well worth the money.

Showing reviews 1-10 of 39 | Next

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