Antec C3 Basic ATX Mid Tower Case

The Antec C3 Basic is a steel-and-glass ATX mid-tower cabinet designed for builders who want practical cooling headroom without unnecessary complexity. Its 4mm tempered glass side panel gives you a clear view of the interior while keeping the overall aesthetic clean and understated in matte black. Motherboard compatibility spans full ATX, Micro-ATX, and Mini-ITX form factors, so the C3 Basic works equally well as a mid-range gaming rig or a compact home-office machine. Seven expansion slots provide plenty of room for multi-GPU or high-card-count configurations. Cooling flexibility is a standout attribute of this chassis. The top panel accepts up to three 120mm or two 140mm fans and radiators ranging from 120mm all the way up to 360mm, giving you room for a high-performance all-in-one liquid cooler. The side panel supports three 120mm fans or a 240mm radiator, though installing a side radiator limits GPU length to 270mm. A single 120mm fan or radiator position at the rear rounds out the airflow options. The PSU shroud area also fits two 120mm fans. In total the case can house up to nine 120mm fans simultaneously. Three dust filters—positioned at the top, right side, and bottom—reduce maintenance frequency by catching debris before it reaches fans or components. The front I/O panel includes a USB 3.0 port, a USB 2.0 port, a combined mic/HD-audio jack, a power button, and a reset button, covering everyday connectivity needs. Storage provisions are purposely lean: one 3.5-inch HDD bay and one 2.5-inch SSD mount keep the interior uncluttered. If your build relies on NVMe storage, those drive bays free up space for improved airflow. Verified Specifications: • Form Factor: ATX Mid Tower • Supported Motherboards: ATX, Micro-ATX, Mini-ITX • Side Panel: 4mm Tempered Glass • Material: Steel + Tempered Glass • Color: Black • Expansion Slots: 7 • Max GPU Length: 415mm (270mm when side radiator is installed) • Max CPU Cooler Height: 160mm • Max PSU Length: 195mm (including cables) • Fan Support: Top 3×120mm / 2×140mm | Side 3×120mm | Rear 1×120mm | PSU Shroud 2×120mm (9 total) • Radiator Support: Top 120/140/240/280/360mm | Side 120/240mm | Rear 120mm • Drive Bays: 1×3.5-inch HDD, 1×2.5-inch SSD • Front I/O: USB 3.0×1, USB 2.0×1, Mic/HD-Audio, Power, Reset • Dust Filters: Top, Side, Bottom • Net Weight: 6.9 kg | Gross Weight: 8.0 kg • Warranty: 2 Years