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popularphoinix | Staff posted Today 04:34 PM

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popularphoinix | Staff posted Today 04:34 PM

[AC] $29.99: Cooler Master MasterBox Q300L Micro-ATX Tower with Magnetic Design Dust Filter at Amazon

$30

$40

25% off

Amazon

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Amazon [amazon.com] has Cooler Master MasterBox Q300L Micro-ATX Tower with Magnetic Design Dust Filter for $34.99 - $5.00 when you 'clip' the coupon on product page = $29.99.
Shipping is free with Prime or on $35+ orders.

Price
$10 lower (25% savings) than the list price of $39.99

Savings
Saving $5.00 (check and activate [amazon.com])

Customer reviews
4.5⭐ / 13,537
1,000+ bought in past month

amazon.com/dp/B0785GRMPG [amazon.com]

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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

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$30

Today

Post Date	Sold By	Sale Price	Activity
01/11/25	Amazon	$37	0
07/19/23	Amazon	$40	0
07/04/23	Amazon	$40 frontpage	17
06/25/23	Amazon	$46	6
05/15/23	Amazon	$47 frontpage	30
10/27/22	Amazon	$42 frontpage	45
06/23/21	Amazon	$35	1
06/16/21	Amazon	$33	5
11/25/19	Amazon	$35	1

Current Prices

Sort: Lowest to Highest | Last Updated 11/15/2025, 02:06 PM

Sold By	Sale Price
Amazon	$39

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6 Comments

vcbb10

Today 04:45 PM

98 Posts

Joined Mar 2009

vcbb10Today 04:45 PM

98 Posts

Our community has rated this post as helpful. If you agree, why not thank vcbb10

FYI: Building in this case is a terrible experience. Flimsy panels, acrylic side panel, restrictive airflow, low build quality. Spend $20-$30 more.

az060693

Today 05:41 PM

1,328 Posts

Joined Feb 2009

az060693Today 05:41 PM

1,328 Posts

Our community has rated this post as helpful. If you agree, why not thank az060693

The CM Elite 302 is a much better deal for $10 more https://www.newegg.com/p/N82E1681...6811119463

av911

Today 06:08 PM

1,659 Posts

Joined Dec 2010

av911Today 06:08 PM

1,659 Posts

No problems with it. Feels cheap? It's this price for a reason. Airflow? Remove the magnetic filter.

LargeGrapes

Today 06:34 PM

1 Posts

Joined Mar 2025

LargeGrapesToday 06:34 PM

1 Posts

I have this case, I was just building something conservative at the time and it's met my needs over the last several years. (I turn my PC on like once every 2 months). I enjoyed that I can relocate the usb slots and the power button, I also have no idea where the magnetic things are!

DDMan

Today 08:07 PM

2,032 Posts

Joined Jan 2004

DDManToday 08:07 PM

2,032 Posts

I too have this case. It's OKAY but if you put a radiator up front and use rounded head screws then you will feel them through the thin magnetic front and side filters.

Also the buttons being on the side is annoying and forces you to only have the window one way

PeteyTheStriker

Pro

Today 08:21 PM

12,336 Posts

Joined Nov 2010

PeteyTheStriker

Pro

Today 08:21 PM

12,336 Posts

Have the special edition of this case, which has the different magnetic covers, overall happy with it. Have had it now for almost 5 years. Been looking for a new case lately because thinking of a new build. If you like to build small this case works. The only issue is the larger GFX cards can sometimes be a pain to get in and out if you have your radiator in the front of the case.

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Computers Computer Parts Computer Cases Occasions Black Friday Cyber Monday Coupon

Rating:	(4.5 out of 5 stars)
Reviews:	13,537 Amazon Reviews
Manufacturer:	Cooler Master
Model Number:	MCB-Q300L-KANN-S00
Product SKU:	B0785GRMPG
UPC:	884102095313
ASIN:	B0785GRMPG
Brand:	Cooler Master
Item Dimensions LxWxH:	15.387 x 9.0551 x 15 inches
Item Weight:	1.0582188 Pounds
Item model number:	MCB-Q300L-KANN-S00
Manufacturer:	Cooler Master

[AC] $29.99: Cooler Master MasterBox Q300L Micro-ATX Tower with Magnetic Design Dust Filter at Amazon

$30

$40

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