Montech Air 903 Max E-ATX Mid Tower Case

The Montech Air 903 Max is an E-ATX mid tower cabinet designed to accommodate a wide range of build configurations while keeping airflow and cooling performance at the forefront. Its spacious interior supports E-ATX, ATX, Micro-ATX, and Mini-ITX motherboards, making it a versatile choice whether you are building a compact workstation or an enthusiast gaming rig. Out of the box, the case arrives with four pre-installed fans: three 140 mm HP140 ARGB PWM fans at the front and one 140 mm HP140 PWM fan at the rear. These connect through the built-in 1-to-6 ARGB and PWM fan hub, simplifying cable management and ensuring synchronized lighting control without the need for additional controllers. Cooling headroom is generous. The front panel and top panel both support radiators up to 360 mm, giving liquid-cooling enthusiasts the flexibility to mount large all-in-one coolers in either position. CPU cooler height clearance reaches 180 mm, accommodating most premium dual-tower air coolers. The case can expand to a maximum of nine fans across the front (up to three 140 mm or three 120 mm), rear (one 140 mm or one 120 mm), top (two 140 mm or three 120 mm), and the area above the PSU (two 120 mm). For high-end graphics cards, the chassis allows GPU lengths of up to 400 mm. Seven PCIe expansion slots and a PSU bay that accepts units up to 240 mm round out the hardware compatibility. Storage options include two 3.5-inch HDD bays and up to five 2.5-inch SSD mounts. The front I/O panel features a USB Type-C port, two USB 3.0 ports, dedicated microphone and speaker jacks, an LED switch, and a reset button. Dust management is handled by filters at the top and bottom of the chassis. The side panel is tempered glass for an unobstructed view of the internal build. Verified Specifications: - Model: AIR 903 MAX - Color: Black - Dimensions (L×W×H): 478 × 230 × 493 mm | Weight: 7.85 kg (case) - Carton dimensions: 555 × 293 × 535 mm | Carton weight: 9.3 kg - Motherboard support: E-ATX, ATX, Micro-ATX, Mini-ITX - Pre-installed fans: 4 (3× 140 mm HP140 ARGB PWM front + 1× 140 mm HP140 PWM rear) - Fan hub: 1-to-6 ARGB & PWM - Max fan support: 9 - Radiator support — Front: 360/280/240/140/120 mm; Top: 360/280/240/140/120 mm - Max CPU cooler height: 180 mm - Max GPU length: 400 mm - Max PSU length: 240 mm - PCIe expansion slots: 7 - Drive bays: 2× 3.5-inch HDD, 5× 2.5-inch SSD (maximum) - Front I/O: 1× USB Type-C, 2× USB 3.0, MIC, SPK, LED SW, RESET - Dust filters: Top, Bottom - Side panel: Tempered Glass - Warranty: 1 Year