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Cooler Master MasterBox Lite 3.1 TG mATX Tower w/ Front Dark Mirror Panel, 3 Customize Color Trims & Tempered Glass Side Panel

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  • Tempered Glass Side Panel
  • DarkMirror Front Panel
  • Customizable trim colors (included in box)
  • Full black coating
  • Support for up to three 120mm fans & watercooling
  • Graphic card support up to 380mm

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews
Master

MasterBox Lite 3.1 TG
Choose Your Style
The MasterBox Lite 3.1 TG mATX Case is your straightforward option for your PC build that doesn't ignore good looks, customization, or performance. A sleek DarkMirror front panel and three custom trim colors (included in the box) offer a great first entry point for customization. Additionally, it comes with a 4mm thick edge to edge Tempered Glass Side Panel to show your internal components. And with support for up to 3 cooling fans and a watercooling system, we ensure your performance will not suffer.

  • DarkMirror front panel
  • Customizable trim colors
  • Full black coating
  • 4mm thick edge to edge Tempered Glass Side Panel
  • Support for 3 fans & watercooling
  • Graphics card support up to 380mm
Master

DARKMIRROR FRONT PANEL
Stand out and be unique. Your case doesn't have to look boring.

Master

CUSTOMIZABLE TRIM COLORS
Choose from three distinct colors to suit your style, all included in the box.

Master

GRAPHICS CARD SUPPORT UP TO 380MM
You won't ever have to worry about the fit of your graphics card, with support for even the largest, widest cards.

4MM THICK EDGE TO EDGE TEMPERED GLASS SIDE PANEL

Show off your build in style, and have easy access to your components incase things go haywire.

0
Master
MasterBox Lite 3.1 TG
Master

MasterBox Lite 5 RGB
Model Number MCW-L3S3-KGNN-00 MCW-L5S3-KGNN-02
Motherboard Support Micro-ATX, Mini-ITX Micro ATX, ATX, Mini-ITX
Dimensions (L x W x H)456 x 209 x 381mm 454 x 199 x 468mm
Fans Included Rear: 120mm x 1 Front: 120mm x 3 RGB Fans
(Additional controller or compatible motherboard required for RGB functionality)
Rear: 120mm x 1 black fan
Fans Support Front: 120mm x 2 fan
Rear: 120mm x 1 fan
Front: 120mm x 3 / 140mm x 2 fan
Rear: 120mm x 1 fan
Radiator Support Front: 120 / 240mm radiator
Rear: 120mm radiator
Front: 240mm / 280mm / 360mm radiator (limited) up to 50mm thickness without fan
Rear: 120mm
Side Panel Tempered Glass Side Panel Tempered Glass Side Panel
Maximum CPU Cooler Height 158mm 160mm
Maximum GPU/PCI Card Length 380mm 400mm
Warranty 2 Years 2 Years

Learn more about the Cooler Master MCW-L3S3-KGNN-00

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years
  • Read full details
  • Return Policies
    • Return for refund within: 30 days
    • Return for replacement within: 30 days
  • This item is covered by Newegg.com's Standard Return Policy.
Ownership: 1 month to 1 year
Verified Owner
1/ 5
The most truthful review you'll ever read about the Masteroven Lite 3.1 TG, Don't buy this case.

Pros: * Decently easy to build in
* Plenty of hardware (Screws)
* Looks okay
* Not that much else to really say about this case

Cons: - ABSOLUTE OVEN & BAD AIR FLOW, I'd probably only trust an APU system in this. Nothing with a external GPU. It get's so hot that the glass on the outside could probably cook an egg. Even with three fans in the system at full speed it will not help.
- Be careful when removing the TG side panel, nothing holds it up once you remove that last side panel screw
- All the front panel buttons feel really cheap. I have two of the tempered glass versions and one acrylic version and on all three of them at least ONE usb port has broken and the power button feels like it will snap off every time you press it.
- All the corners are sharp so be careful when handling the case
- 3.5" drive cage placement sucks which can interfere with PSU and cable management

Overall Review: I truly wanted this to be the case I'd use for my PC cafe (20+ computers) but dang it just's absolutely horrible when it comes to cooling and air flow even after adding two additional fans. I think it's a decent looking case but no use when it's an OVEN. I give it a one egg review, I just can't recommend this case to anyone specially for the price you pay ($40+). I wish Cooler Master could take the cases back and give me something better. Sucks you can't return once it's opened. Stay away from the current Micro ATX cases from cooler master, they are all poor when it comes to air flow.

1 out of 5 people found this review helpful. Did you?
Ownership: 1 month to 1 year
Verified Owner
4/ 5
It doesn't have an optical drive slot accessible

Pros: See through and cost-effective

Cons: It doesn't have an optical drive slot accessible

1 out of 1 people found this review helpful. Did you?
Ownership: 1 week to 1 month
Verified Owner
2/ 5
Great case but interchangeable plastic clip at top doesnt fit

Pros: - Beautiful tempered glass window at a value price
- Enough room for a decent matx build

Cons: - Plastic clip (red, white, black) at the top keeps popping out at edges, called and left a message with coolermaster support and got no response
- Tempered glass panel just sits and doesnt hold in when unscrewed so caution must be use when disconnecting it unlike other cases otherwise it will slip. Should have a warning sticker for this as it isnt apparent at first
- Hard drive cage is a joke, have to undo 6 screws to get it out for drive installation, should just charge 2$ and have plastic clips or align the front holes with the drive screws so drives can be installed/uninstalled by remove front grill, anything but this, basically the layout is the same as some of their budget cases from years ago
- Back included fan is pretty underwhelming and should just not include it and lower the price as an aftermarket fan is almost required.
- Did I mention the plastic clips? Been trying for hours but it refuses to fit properly, either the plastic is off, or the acrylic front panel is misshapen, either way very disappointing as its too much hassle to return this especially after building in it, wish coolermaster could just send me a replacement for those parts so I dont have to rma the whole thing.

Overall Review: - If coolermaster can reach out and fix this clip issue I would def increase the eggs, but as it stands esp after reaching out to them and getting no response, I feel 2 eggs is fair.

2 out of 2 people found this review helpful. Did you?
Manufacturer Response:
Hello Andrew,

Please contact the support team through the support site at account.coolermaster.com. Depending on the volume of calls and messages, it might take some time before our team can address every message. By placing a ticket, or going into live chat, you will get a hold of our support team much quicker. We had the plastic rail mounting options for HDDs on our previous cases, and customer didn't like those either, so they were removed.

CM-PNguyen
Ownership: 1 month to 1 year
Verified Owner
4/ 5
Very nice case for the money

Pros: Tempered glass
Good room for cable management
Inexpensive

Cons: None for me

Overall Review: I bought this to build my PLEX Server and suits my needs very well. Room for 2 hdd and 1 ssd, put some rring fans up front and looks very good, full PSU fits well.
For the price you cant beat it

2 out of 3 people found this review helpful. Did you?
Ownership: 1 month to 1 year
Verified Owner
1/ 5
Do not recommend tempered glass

Pros: Case looks good
Cable management

Cons: Tempered glass not durable, it shattered during installation
Not the best airflow
Customer Support

Overall Review: I don't recommend the case with the tempered glass version. While building PC, tempered glass shattered all over the build. I've contacted Cooler Master's customer support and have not gotten a response. I'm dissatisfied.

2 out of 5 people found this review helpful. Did you?
Ownership: 1 month to 1 year
Verified Owner
3/ 5
looks good but no airflow

Pros: Clean look and modern

Cons: No airflow, have to remove the front to allow fans to breathe.

Overall Review: Spend a little more and get a better case.

1 out of 2 people found this review helpful. Did you?
Ownership: 1 month to 1 year
Verified Owner
2/ 5
Absolutely zero front airflow, design flaw!!

Pros: Good looking, tempered glass, cheap!

Cons: Absolutely ZERO airflows at the front, the mesh at the top and bottom of the front panel is useless, especially the bottom mesh appears big but the inside was sealed. There is no air flow, zero, no matter how many fans you put at the front.

Overall Review: Had to drill some holes myself to get the air going into the case.
Not recommended.

7 out of 8 people found this review helpful. Did you?
Ownership: 1 week to 1 month
Verified Owner
3/ 5
REEEEE

Pros: good when on sale not worth 50$

Cons: you need two extra case fans for the front or else you put a microwave oven

Overall Review: it's a case

1 out of 4 people found this review helpful. Did you?
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