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expired Posted by sr71 • Jun 21, 2021
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expired Posted by sr71 • Jun 21, 2021

Cooler Master MasterBox NR400 microATX Tempered Glass Computer Case (Black)

after $30 Rebate + Free S/H

$35

$75

53% off
Amazon
50 Comments 31,500 Views
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Deal Details
Amazon has Cooler Master MasterBox NR400 microATX Tempered Glass Computer Case (Black) on sale for $64.99 - $30 Cooler Master Rebate = $34.99. Shipping is free.

Thanks to community member sr71 for finding this deal

Note, limit one rebate per person/household. Must be sold/shipped by Amazon

About the Product
  • Minimalistic mesh design
  • Optimal thermal performance
  • Flush tempered glass side panel design
  • Supports up to 346 millimeter GPU
  • High quality cable management/rubber grommets

Editor's Notes

Written by Discombobulated | Staff
  • Price Research: Purchase this item today and save $40 Off (53.34% Savings) from the original listed price of $74.99 (savings includes rebate offer). Typically, this microATX case goes on sale from $50-$55
  • Must be purchase through Amazon and mail all required items, postmarked no later than July 27, 2021
  • Please allow up to 10-12 weeks for processing of rebate/submission
  • Offer valid through June 27, 2021 or while promotion last
Additional Note
  • This product has earned 4.7/5 star rating w/ over 700+ customer reviews on Amazon
  • Please refer to the forum thread for additional details - Discombobulated

Original Post

Written by sr71
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Amazon has Cooler Master MasterBox NR400 microATX Tempered Glass Computer Case (Black) on sale for $64.99 - $30 Cooler Master Rebate = $34.99. Shipping is free.

Thanks to community member sr71 for finding this deal

Note, limit one rebate per person/household. Must be sold/shipped by Amazon

About the Product
  • Minimalistic mesh design
  • Optimal thermal performance
  • Flush tempered glass side panel design
  • Supports up to 346 millimeter GPU
  • High quality cable management/rubber grommets

Editor's Notes

Written by Discombobulated | Staff
  • Price Research: Purchase this item today and save $40 Off (53.34% Savings) from the original listed price of $74.99 (savings includes rebate offer). Typically, this microATX case goes on sale from $50-$55
  • Must be purchase through Amazon and mail all required items, postmarked no later than July 27, 2021
  • Please allow up to 10-12 weeks for processing of rebate/submission
  • Offer valid through June 27, 2021 or while promotion last
Additional Note
  • This product has earned 4.7/5 star rating w/ over 700+ customer reviews on Amazon
  • Please refer to the forum thread for additional details - Discombobulated

Original Post

Written by sr71

Community Voting

Deal Score
+46
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Visit Amazon

Price Intelligence

Model: Coolermaster MasterBox NR400

Deal History 

Sale Price
Slickdeal
  • $NaN
  • Today

Current Prices

Sort: Lowest to Highest | Last Updated 7/2/2025, 11:05 PM
Sold By Sale Price
Amazon$79.99
Office Depot and OfficeMax $89.05

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Top Comments

pclinkcomputers
844 Posts
75 Reputation
Well the rebate sours the deal somewhat, but this is a fantastic case. If you're one of the dozen of us, or so, who are still using an ODD and are interested in the mATX form factor, this is the one.

Even if you're not going to use the 5.25" drive bay, it's still great.

I've used this case for two builds now and couldn't be happier.

49 Comments

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Jun 22, 2021
48 Posts
Joined Aug 2016
Jun 22, 2021
kyocere
Jun 22, 2021
48 Posts
Great looking case for a small server. Can hold 4 3.5 inch drives.
Jun 22, 2021
844 Posts
Joined Sep 2016
Jun 22, 2021
pclinkcomputers
Jun 22, 2021
844 Posts
Well the rebate sours the deal somewhat, but this is a fantastic case. If you're one of the dozen of us, or so, who are still using an ODD and are interested in the mATX form factor, this is the one.

Even if you're not going to use the 5.25" drive bay, it's still great.

I've used this case for two builds now and couldn't be happier.
1
Jun 23, 2021
7 Posts
Joined Apr 2021
Jun 23, 2021
SDBus
Jun 23, 2021
7 Posts
The NR400 that is sold as a retail product in our region only comes with the ODD. This model can only support 2 120mm fans. If you somehow get your hands on the non-ODD version(from a vendor that shipped them here from overseas), that model can support 3 120mm fans in front.
Jun 23, 2021
808 Posts
Joined Jul 2007
Jun 23, 2021
kabal57
Jun 23, 2021
808 Posts
Decent deal on a pretty nice little case. Odd bays are a rarity these days, especially in a sff case. Lots of mesh, this would probably be a pretty good little air cooled case
Jun 23, 2021
361 Posts
Joined Jan 2012
Jun 23, 2021
ItGuy76
Jun 23, 2021
361 Posts
can you mount a full size PSU in this case?
Jun 23, 2021
2,081 Posts
Joined Aug 2010
Jun 23, 2021
jomeyq
Jun 23, 2021
2,081 Posts
Quote from SDBus :
The NR400 that is sold as a retail product in our region only comes with the ODD. This model can only support 2 120mm fans. If you somehow get your hands on the non-ODD version(from a vendor that shipped them here from overseas), that model can support 3 120mm fans in front.
You can actually put 2 140mm in the front of this one, which is the way I'd go instead of 3 120mm anyway.
Jun 23, 2021
177 Posts
Joined Jun 2004
Jun 23, 2021
Xbanx
Jun 23, 2021
177 Posts
Quote from ItGuy76 :
can you mount a full size PSU in this case?
You have to dig around to find it...
Bottom mount, ATX PS2
325mm (w/o front radiator & HDD cage), 140mm (HDD cage in backmost position)

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Jun 23, 2021
21 Posts
Joined Jul 2013
Jun 23, 2021
modestman8
Jun 23, 2021
21 Posts
I recently built a pc in this case. I love it. It's sturdy, pretty, and has great cable management space. I highly recommend this.
Jun 23, 2021
2,081 Posts
Joined Aug 2010
Jun 23, 2021
jomeyq
Jun 23, 2021
2,081 Posts
Quote from ItGuy76 :
can you mount a full size PSU in this case?
Not sure what you mean by "full size" but it will take an atx psu up to 200mm long, which is pretty big. I think my 850 gold psu is only 160, which is fairly standard.
Expert
This user is an Expert in Home & Home Improvement
Jun 23, 2021
747 Posts
Joined Nov 2017
Jun 23, 2021
HusLol
Expert
This user is an Expert in Home & Home Improvement
Jun 23, 2021
747 Posts
I need the GPU Frown((((
5
Jun 23, 2021
1,094 Posts
Joined Jan 2006
Jun 23, 2021
Tep
Jun 23, 2021
1,094 Posts
If it did not have the ODD I would buy at least one. (Though I am not a fan of MIR's)
Jun 23, 2021
2,344 Posts
Joined Jun 2008
Jun 23, 2021
7minutessober
Jun 23, 2021
2,344 Posts
Just hope you never need support with it. Cooler Master CS is terrible.

Clearly 2 of you haven't dealt with them.
Last edited by 7minutessober June 25, 2021 at 07:28 PM.
2
Jun 23, 2021
7 Posts
Joined May 2021
Jun 23, 2021
BeigeMallard351
Jun 23, 2021
7 Posts
this microATX case goes on sale from $50-$55
Jun 23, 2021
678 Posts
Joined Dec 2010
Jun 23, 2021
jmunjr
Jun 23, 2021
678 Posts
Great case, but the included fans are a little too noisy for me as I'm picky so I replaced them (and added a second to the front) with some Arctic P12s. I also added some fan filters to the front two, as this case can get really dusty inside with only the front mesh filtering the intake air. I configured fan-tastic in the bios to make all the fans about 1200rpm(60%) with the rear one ramping up to max speed if necessary as the motherboard temp increases, but even under max load with 3700x cpu and 1650 GPU on my setup the mobo temp maxes out at about 46C (ambient 21C), so that rear fan never gets close to max. Overall it's super quiet, cool, really good looking and small. Great deal here.
Last edited by jmunjr June 23, 2021 at 08:31 AM.
1

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Jun 23, 2021
46 Posts
Joined Jul 2011
Jun 23, 2021
AxioWolf
Jun 23, 2021
46 Posts
I'm confused by the images on the page. The first image shows an ODD bay. The 3rd image shows 3 colored fans on the front and no ODD cut-out. Can it be either and comes with two front panels? Or is this misleading marketing?

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