From the Manufacturer
https://www.inwin-style.com/en/gaming-chassis/303
Brand
IN WIN
Model
303 Black
Details
ATX Mid Tower
Color
Black
Case Material
SECC / Tempered Glass
With Power Supply
No
Power Supply
ATX PS2
Micro ATX / ATX / Mini-ITX
Yes
Expansion
Internal 3.5" Drive Bays
2
Internal 2.5" Drive Bays
2
7 x PCI-E
Front Panel Ports
Front Ports
2 x USB 3.0 / 2 x USB 2.0 / HD Audio
Cooling System
120mm Fans
Rear: 1 x 120mm Fan / 120mm Radiator
Top: 3 x 120mm Fan / 360mm Radiator
Bottom: 3 x 120mm Fan
Dimensions & Weight
Max GPU Length Allowance
350mm
Dimensions (H x W x D)
19.60" x 8.40" x 18.80"
19.60" x 9.70" x 18.80" w/ screw and handle height
Weight
24.00 lbs.
Additional Info
Features
The 303 Black mid tower chassis was crafted out of quality SECC steel and a tempered glass side panel that can be removed with just a press of a button. The internal design has a PSU chamber at the top for easier installation and tidier cable management. Also, the dual chambered design adds more cooling options to go along the top of the case to remove the heat through the ventilated steel panel. The 303 Black is capable of housing plenty of hardware, but even has metallic supports for longer graphics cards. The clean front panel has flushed ports on the front IO that’s backlit for easier connectivity even in dark settings.