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Thermaltake Core G21 Dual 4mm Tempered Two-Toned Glass Power Cover ATX Black Gaming Computer Case CA-1I4-00M1WN-00

Ships from United States. Most customers receive within 5-9 days.

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  • Dual (Two-Toned) 4mm TG Panels (Back panel is darker than front window)
  • TG Safe Glass Mounting Bracket (Supports panel during install to rest before secured to chassis)
  • Full Length PSU cover with additional Storage
  • Rear Mounted PSU - Includes PSU bracket to slide PSU in from rear of case
  • Top mount I/O Panel with 2x USB 3.0
  • Top Mount Fan with 120/140mm options
  • Supports up to 360mm Rad (Front Mount Only)

  • Overview
  • Specs
  • Warranty & Returns
  • Reviews

Thermaltake Core G21 Tempered Glass Edition Mid-Tower Chassis

Build better with the Core G21 Tempered Glass Edition featuring premium dual 4mm tempered glass panels. New TG Safe Glass mounting system gives each glass panel a place to sit for a risk free way to secure the panels protected with rubber mounts. Clean up your cables for a professional look with a full length power supply cover and add more with additional storage options. Supporting up to a 360mm Radiator, the Core G21 packs in the cooling performance with room for DIY LCS, 120/140mm fan options and proper ventilation for a cool experience.


Tt LCS Certified

Tt LCS Certified is a Thermaltake exclusive certification applied to only products that pass the design and hardcore enthusiasts standards that a true LCS chassis should be held to. The Tt LCS certification was created so that we at Thermaltake can designate to all power users which chassis have been tested to be best compatible with extreme liquid cooling configurations to ensure you get the best performance from the best features and fitment.


Double down with dual 4mm Tempered Glass Panels

Premium 4mm thick tempered glass covers both sides for your build. Two-toned tinted glass for the look up front, while keeping business in the back and secured with rubber mounts and TG Safe Glass Bracket holds each panel safely for easy removal and installation.


Fully Modular Concept

The fully modular drive brackets provide the ease of installation/removal and maximize the interior space for custom cooling loop. Especially, the tool-less drive bay design allows users to freely interchange the 3.5” and 2.5” hard-drives to suit their particular needs.


Clean up Your Cables like a Professional

Designed for advanced cable management, the pre-mounted PSU shroud allows the entire bottom area of the case and includes additional storage options.


Excellent Expandability

The Core G21 TG features its roomy installation space for high-end PC hardware. Supporting a tower CPU cooler with maximum height 160mm, and a dual expansion slot VGA of up to 410mm in length. Extend your storage to accommodate multiple 3.5”/2.5” storage devices.


Superior Cooling Capability

The Core G21 TG is optimized for proper ventilation, along with its support for advanced liquid cooling solutions. With a mesh panel design, the case can house up to triple 120mm or dual 140mm intake fans plus an included 120mm exhaust fan that provide efficient airflow for the system.


Core G21 TG Radiator Supporting List


Core G21 TG Fan Supporting List



Model Core G21 Tempered Glass Edition
P/N CA-1I4-00M1WN-00
Case Type Mid Tower
Dimension (H x W x D) 476 x 208 x 471 mm (18.7 x 8.2 x 18.5 inch)
Net Weight 8.05 kg / 17.74 lb
Color Exterior & Interior : Black
Material SPCC
Side Panel 4mm Tempered Glass x 2 (Left & Right)
Cooling System Rear (exhaust) : 120 x 120 x 25 mm fan (1000rpm, 16dBA)
Drive Bays -Accessible
-2 x 2.5"; 2 x 3.5" or 2 x 2.5"
Expansion Slots 7
Motherboards 6.7” x 6.7” (Mini ITX), 9.6” x 9.6” (Micro ATX), 12” x 9.6” (ATX)
I/O Port USB 3.0 x 2, HD Audio x 1
PSU Standard PS2 PSU (optional)
Fan Support Front: 3 x 120mm, 2 x 140mm
Top: 1 x 120mm, 1 x 140mm
Rear: 1 x 120mm
Bottom: 1x 120mm
Radiator Support Front: 1 x 360mm, 1 x 280mm
Rear: 1 x 120mm
Clearance CPU cooler height limitation: 160mm
VGA length limitation: 410mm
PSU length limitation: 220mm

Learn more about the Thermaltake CA-1I4-00M1WN-00

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years
  • Read full details
Ownership: 1 week to 1 month
Verified Owner
5/ 5
MY First Gaming Rig 6/13/2020 12:54:44 PM

Pros: I love this case. It's great for entry level gamers. The two-toned glass is way cool and easy to remove and replace. The case opens to a stage were you can just go crazy with creativity. Read the Manuel that comes with it to get a feel for all the bells and whistles.

Cons: Cons - I have none.

Overall Review: Would I recommend this to others. Yes, this is a cool case that's easy to work with and allows for TONS of creativity.

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Ownership: 1 week to 1 month
Verified Owner
4/ 5
All the room... 5/28/2020 1:26:51 PM

Overall Review: This was a great choice for my first build. Plenty of room in the front for pretty much any AIO you'd want to run and there are a lot of securement points on the back for cable management. The only drawback I can see is the lack of options for top mounting an AIO since you can only mount a 140mm rad. Other than that, it's a great case.

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Ownership: 1 month to 1 year
Verified Owner
5/ 5
Excellent Case 5/25/2020 8:27:34 PM

Pros: Nice layout and good construction. I easily fit a DeepCool CPU cooler and for an air cooling setup.

Overall Review: I highly recommend it for aircooled rigs

Did you find this review helpful?
Ownership: 1 week to 1 month
Verified Owner
4/ 5
Pretty nice, but some flaws. 1/18/2020 8:43:32 AM

Pros: -Looks pretty good
-Good airflow once you remove one of the front dust filters

Cons: -Wish screws had come separated rather than in one bag
-Instructions slightly vague

Overall Review: I had problems with cable management but that could just be me. The instructions were unclear and vague but overall it wasn't hard to build in. I would recommend this product.

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Ownership: more than 1 year
Verified Owner
5/ 5
power button problems (fixed) 1/14/2020 3:40:52 PM

Pros: - I like how the dark screen pretty much hides the wires.
- decent airflow, itx MSI 1060 6GB averages 62 Celsius with folding @ home

Cons: - Out of the box, the power button was stuck once pressed down so that you had to press the restart button to "balance" it out like a seesaw. This was annoying.
Had to loosen / adjust the screws (I believe the middle two out of 6 affect the power button the most) in the power button board so that the power button could pop up again once depressed. Didn't have to RMA.

Overall Review: using this case for almost 2 years, power button still going strong

Did you find this review helpful?
Ownership: 1 week to 1 month
Verified Owner
4/ 5
Incredible budget case 12/18/2019 4:03:21 AM

Pros: -This case is beautiful, the dark tinted tempered glass is perfect and hides some of the cable management but this case also MAKES you do cable management so that your case looks beautiful.
-This case is very easy to work in, but it would help to know which cables will go where before installing your power supply which I will talk about in the cons.
-Case has front mesh which helps keep my pets hair from going into my components.
-Perfect for showing off your custom cables.

Cons: -This is nitpicking but before installing your PSU you will want to insert your hd audio into your motherboard, sata cable and sata power (if you're installing and SSD) into the opening where the PSU will be. You'll want to do this since the PSU will be in the way of inserting these cables and you'll have to unscrew your PSU just to have the best cable management.
-The HDD mount is installed vertically and this causes some rattling which is audible.
-The HDD is visible since the mounts are on the cable management side. I wish you were able to add them under the shroud where the PSU is.
-If you don't have custom cables and you're left with extra, you'll have to stuff the extra cables under the shroud but you'll have to do it in a way where the cable won't be seen in the front of the case since the shroud is not complete.

Overall Review: I really live this case. The cons aren't a big deal to me expect for the HDD being audible when being used but other than that, this is a great case. I can easily solve this by simply using SSDs but those are still quite expensive and HDDs are still extremely reliable.

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Ownership: 1 month to 1 year
Verified Owner
2/ 5
Tempered glass came damaged - Thermaltake wants credit card to replace 8/27/2019 9:59:44 AM

Pros: Generally speaking, nice case, if it didn't come damaged.

Cons: The back -side tempered glass panel came with damaged glass near one of the thumb screw holes. In order to complete the RMA process, Thermaltake wants my credit card. I'm not sure that that's worth the hassle.

Overall Review: Would rate 5 stars if Thermaltake would just replace the glass panel without expecting my credit card.

5 out of 9 people found this review helpful. Did you?
Ownership: 1 week to 1 month
Verified Owner
4/ 5
Nice for the price.. but warm. 8/12/2019 2:51:04 PM

Pros: Easy to build in, good cable management.

Cons: Only comes with one 120 mm fan. Runs warm.

Overall Review: Has double screen/filters in front of case. Once you remove the magnetic filter and add a few fans your good. Glad I got mine on sale.

2 out of 2 people found this review helpful. Did you?
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