Can this case accommodate additional fans beyond the 4 pre-installed ones, and if so, what sizes are compatible?

Yes, this case can accommodate additional fans beyond the 4 pre-installed ones. It supports up to 9 pcs of 120mm fans.

Questions & Answers: darkFlash L280, ATX Full-Tower PC Gaming Case with Dual Real-Time Display, Three-Side Curved Tempered Glass, 4× PWM ARGB Fans Pre-Installed, USB 3.0, Supports 360mm Radiator,RTX 50 Series Compatible

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darkFlash L280, ATX Full-Tower PC Gaming Case with Dual Real-Time Display, Three-Side Curved Tempered Glass, 4× PWM ARGB Fans Pre-Installed, USB 3.0, Supports 360mm Radiator,RTX 50 Series Compatible

Three-Side Curved Tempered Glass: Elegant panoramic view to showcase RGB lighting and internal hardware.
Dual Real-Time Digital Display: On-case screens show CPU/GPU temps and usage via motherboard USB 2.0.
Pre-Installed Cooling: Includes 4× PWM ARGB fans for out-of-box airflow and lighting.
Strong Cooling Support: Supports up to 7× 120mm fans total and a side 360mm radiator.
Large GPU & Cooler Clearance: Fits GPUs up to 410mm and CPU coolers up to 157mm.
Ample Storage: Tool-friendly mounts for 3× SSD + 2× HDD for expanded storage.
Sturdy Build & Compact Footprint: 0.7mm SPCC frame, dimensions 443×280×440mmdurable yet space-efficient.
Quick-Access & Clean Builds: Quick-release left glass, optimized rear routing holes and USB 3.0 front I/O.

$119^.99 –