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expiredTurquoiseHexagonSun posted Oct 28, 2022 02:02 AM
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expiredTurquoiseHexagonSun posted Oct 28, 2022 02:02 AM

Cooler Master MasterBox Q300L Micro-ATX Tower w/ Magnetic Design Dust Filter

+ Free Shipping

$42

$70

40% off
Amazon
45 Comments 31,594 Views
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Deal Details
Amazon.com has Cooler Master MasterBox Q300L Micro-ATX Tower w/ Magnetic Design Dust Filter (MCB-Q300L-KANN-S00) for $42. Shipping is free.

Thanks to community member TurquoiseHexagonSun for finding this deal.

Features:
  • I/O panel can be adjusted in 6 different locations and the Case can be positioned: Vertical or horizontal
  • Edge to edge acrylic transparent side panel offers a full view inside
  • Body depth height: Can support normal size ATX power supply
  • Front magnetic design dust filter with open perforated front, top and bottom for high air performance
  • Extra space behind the motherboard tray for hidden cable management
  • Motherboard Support: Micro ATX, Mini ITX, CPU Cooler: 159mm/6.2", GPU 360mm, Radiator Support Front: 120mm/240mm, Rear: 120mm

Editor's Notes

Written by johnny_miller | Staff
  • About this store:
  • Reviews:
    • 4.5 out of 5 stars by over 13,000 Amazon customers.
  • About this deal:
    • Our research indicates this offer is $28 lower (40% savings) than the next best price from a reputable merchant at the time of this post.

Original Post

Written by TurquoiseHexagonSun
Product Info
Community Notes
About the Poster
Deal Details
Product Info
Community Notes
About the Poster
Amazon.com has Cooler Master MasterBox Q300L Micro-ATX Tower w/ Magnetic Design Dust Filter (MCB-Q300L-KANN-S00) for $42. Shipping is free.

Thanks to community member TurquoiseHexagonSun for finding this deal.

Features:
  • I/O panel can be adjusted in 6 different locations and the Case can be positioned: Vertical or horizontal
  • Edge to edge acrylic transparent side panel offers a full view inside
  • Body depth height: Can support normal size ATX power supply
  • Front magnetic design dust filter with open perforated front, top and bottom for high air performance
  • Extra space behind the motherboard tray for hidden cable management
  • Motherboard Support: Micro ATX, Mini ITX, CPU Cooler: 159mm/6.2", GPU 360mm, Radiator Support Front: 120mm/240mm, Rear: 120mm

Editor's Notes

Written by johnny_miller | Staff
  • About this store:
  • Reviews:
    • 4.5 out of 5 stars by over 13,000 Amazon customers.
  • About this deal:
    • Our research indicates this offer is $28 lower (40% savings) than the next best price from a reputable merchant at the time of this post.

Original Post

Written by TurquoiseHexagonSun

Community Voting

Deal Score
+47
Good Deal
Visit Amazon

Price Intelligence

Model: Cooler Master MasterBox Q300L Micro-ATX Tower with Magnetic Design Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated Airflow, Black (MCB-Q300L-KANN-S00)

Deal History 

Sale Price
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Current Prices

Sort: Lowest to Highest | Last Updated 9/17/2025, 11:42 PM
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Amazon$39.99

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Top Comments

Weston78
116 Posts
24 Reputation
Depends on how much you want to spend, but a really good micro ATX case with good airflow, cable management, build quality and a front USB-C port is the Fractal Design Meshify 2 Mini. If you want something similar but a bit cheaper there is also the Rosewill Spectra C101, which also has USB-C and is kind of a knockoff of the Meshify 2 Mini.

Most of the micro ATX cases in the $50-80 range don't have a USB-C port on the front.

44 Comments

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Oct 28, 2022 06:30 PM
2,010 Posts
Joined Nov 2012
jkilezOct 28, 2022 06:30 PM
2,010 Posts
Almost back to pre-pandemic normal price. Almost.

Edit: Although it looks like this is only the second time the non-rebate price has dropped this low in about two years.
Last edited by jkilez October 28, 2022 at 11:41 AM.
Oct 28, 2022 06:49 PM
187 Posts
Joined Jan 2020
OmnytrixOct 28, 2022 06:49 PM
187 Posts
Quote from jkilez :
Almost back to pre-pandemic normal price. Almost.

Edit: Although it looks like this is only the second time the non-rebate price has dropped this low in about two years.
Gonna stick my pandemic build in this. 5600g I got while waiting out GPU prices and a 1660ti I picked up for half price.
Oct 28, 2022 08:50 PM
22 Posts
Joined Nov 2017
PedroL7385Oct 28, 2022 08:50 PM
22 Posts
I have this, deals solid case is meh
Oct 28, 2022 10:39 PM
116 Posts
Joined Dec 2014
Weston78Oct 28, 2022 10:39 PM
116 Posts

Our community has rated this post as helpful. If you agree, why not thank Weston78

I built a spare parts PC in one of these for a family member, its a decent case if you're on a really tight budget, nothing special about it, but it gets the job done.
1
Oct 29, 2022 01:20 AM
208 Posts
Joined May 2016
AvillionOct 29, 2022 01:20 AM
208 Posts
Quote from Weston78 :
I built a spare parts PC in one of these for a family member, its a decent case if you're on a really tight budget, nothing special about it, but it gets the job done.
Im looking into a micro ATX case case thats good for the price, what do you recommend? i dont need those fancy LED. as long as it has a USB c port infront i guess
Oct 29, 2022 03:53 AM
1,499 Posts
Joined Mar 2012
Xray_ManOct 29, 2022 03:53 AM
1,499 Posts
PCs with multiple LED fans is akin to having a Civic with the exhaust pipe that sounds like a loud popcorn machine
4
Oct 29, 2022 05:38 AM
116 Posts
Joined Dec 2014
Weston78Oct 29, 2022 05:38 AM
116 Posts

Our community has rated this post as helpful. If you agree, why not thank Weston78

Quote from Avillion :
Im looking into a micro ATX case case thats good for the price, what do you recommend? i dont need those fancy LED. as long as it has a USB c port infront i guess
Depends on how much you want to spend, but a really good micro ATX case with good airflow, cable management, build quality and a front USB-C port is the Fractal Design Meshify 2 Mini. If you want something similar but a bit cheaper there is also the Rosewill Spectra C101, which also has USB-C and is kind of a knockoff of the Meshify 2 Mini.

Most of the micro ATX cases in the $50-80 range don't have a USB-C port on the front.
3

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Oct 29, 2022 05:57 AM
744 Posts
Joined Oct 2013
doriginaldigitaltimOct 29, 2022 05:57 AM
744 Posts
Quote from Xray_Man :
PCs with multiple LED fans is akin to having a Civic with the exhaust pipe that sounds like a loud popcorn machine
Yes, but have you seen the AMD Prism? It's a gorgeous stock cooler. Have to see it in person, because Pics don't do it justice. It's the only led fan I like. I had it for few years, but it was the only led fan in the case.
Last edited by doriginaldigitaltim October 28, 2022 at 11:02 PM.
Oct 29, 2022 06:32 AM
208 Posts
Joined May 2016
AvillionOct 29, 2022 06:32 AM
208 Posts
Quote from Weston78 :
Depends on how much you want to spend, but a really good micro ATX case with good airflow, cable management, build quality and a front USB-C port is the Fractal Design Meshify 2 Mini. If you want something similar but a bit cheaper there is also the Rosewill Spectra C101, which also has USB-C and is kind of a knockoff of the Meshify 2 Mini.

Most of the micro ATX cases in the $50-80 range don't have a USB-C port on the front.
Oh nice, ill take a look at those. Thanks!
Oct 29, 2022 06:50 AM
5 Posts
Joined Sep 2019
CleverGorilla5968Oct 29, 2022 06:50 AM
5 Posts
can anyone confirm how many fans came w the case? looks like 1 in the back?

all other slots are optional?
Oct 29, 2022 04:11 PM
15 Posts
Joined May 2017
KBBQFANOct 29, 2022 04:11 PM
15 Posts
Yeah I bought this case but swapped immediately for a better one. Airflow is really subpar with the acrylic and the build quality is less than good too. Fine if it's for a family pc or nothing too high performance
1
Oct 29, 2022 04:11 PM
77 Posts
Joined Jan 2011
tortiskunkOct 29, 2022 04:11 PM
77 Posts
https://youtu.be/F3n80GxU-Zs

This is for the ATX size of this case but GN reports it as very bad for airflow.
2
Oct 29, 2022 04:27 PM
342 Posts
Joined Sep 2014
barackstarOct 29, 2022 04:27 PM
342 Posts
Quote from CleverGorilla5968 :
can anyone confirm how many fans came w the case? looks like 1 in the back?

all other slots are optional?
I bought this a couple weeks ago at full price (sigh).. yes, just the one fan is included.
Oct 29, 2022 06:24 PM
276 Posts
Joined Aug 2017
Ayush.KOct 29, 2022 06:24 PM
276 Posts
how is this a deal? isn't this the normal price of the case, i remember paying less than this years ago. also this case is garbage, the thermals are very bad, there's a lot of yt videos on it
Last edited by Ayush.K October 30, 2022 at 01:20 PM.
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Oct 29, 2022 08:02 PM
11 Posts
Joined Nov 2015
jgdealioOct 29, 2022 08:02 PM
11 Posts
This is the price I paid for it in 2018.

I move my PC's around the office occasionally, and got tired of moving huge full size PCs.
These are decent sized and accommodate the older video cards - Not sure about the new huge cards that are out.

I was never able to hunt down the case handle that is a separate option.

The magnetic mesh that attaches to the front and top have sharp edges. I've gotten a small cut before on it.
The mesh doesn't really keep dust out, so I just leave them off. You just have to use a dust blower on it a few times a year.

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