3U Rackmount Case Category Product Key Parameters Comparison Table
| Product Image | Model Product Link | Dimensions (mm) | Motherboard Size (mm) | Drive Support (qty) | Fan Count | Power Type | Material Thickness (mm) | Net Weight (kg) | Gross Weight (kg) | Application Field | Customization |
 | 3U Rackmount Case ISC RC3U400LC-M | 482×400×133 (19.0″×15.7″×5.2″) | ATX/mATX/Mini ITX | 8×3.5″ HDD | 1 | ATX PSU | 1.2 | 6.5 | 7.6 | N/A | Yes |
 | 3U Rackmount Case ISC-RC3U390L-M | 482×390×133 (19.0″×15.4″×5.2″) | ATX 305×245 mm (12.0″×9.6″) | 11×3.5″ HDD | 2 | ATX PSU | 1.2 | 6.5 | 7.5 | N/A | Yes |
 | 3U Rackmount Case ISC-RC3U390F-M | 482×390×133 (19.0″×15.4″×5.2″) | ATX 305×245 mm (12.0″×9.6″) | 8×3.5″ HDD | 2 | ATX PSU | 1.0 | 5.85 | 7.58 | N/A | Yes |
 | 3U Rackmount Case ISC-RC3U300F-M | 482×300×133 (19.0″×11.8″×5.2″) | ATX 305×245 mm (12.0″×9.6″) | 2×3.5″ HDD | 2 | ATX power | 1.2 | 5.309 | 6.827 | N/A | Yes |
 | 3U Rackmount Case ISC-RC3U390L5-M | 482×390×133 (19.0″×15.4″×5.2″) | ATX 305×245 mm (12.0″×9.6″) | 8×3.5″ HDD | 2 | ATX PSU | 1.2 | 6.793 | 9.487 | N/A | Yes |
 | 3U Rackmount Case ISC-RC3U450L7-M | 482×450×133 (19.0″×17.7″×5.2″) | ATX 305×245 mm (12.0″×9.6″) | 8×3.5″ HDD | 2 | ATX PSU | 1.2 | 7.5 | 9.8 | N/A | Yes |
 | 3U Rackmount Case ISC-RC3U480L-M | 482×380×133.5 (19.0″×15.0″×5.3″) | ATX 305×245 mm (12.0″×9.6″) | 8×3.5″ or 6×3.5″+2×2.5″ HDD | 3 | ATX PSU / redundant PSU support | N/A | N/A | N/A | Server | Yes |
3U Rackmount Case Application Overview
3U Rackmount Cases from ISTONECASE hit the sweet spot between compact 2U enclosures and deeper 4U frames. At 133 mm height, they support ATX, mATX and Mini-ITX motherboards and offer 8–11 drive bays, multiple full- and half-height PCIe slots and robust cooling (120 mm and 80 mm fan options). Whether you’re building mid-depth storage arrays, database servers, VDI hosts or industrial control appliances, our 3U chassis deliver the drive density and expansion flexibility you need without sacrificing valuable rack space.
Customization & Contact
With ISTONECASE, every detail is yours to specify—choose hot-swap backplanes (with SGPIO) or fixed bays, front-panel I/O (USB3.0, LEDs, capacitive touch screens), PCIe slot count/orientation, fan layouts (with shock-absorb mounting), material (SGCC steel, aluminum panels, powder-coat finish) and bespoke branding. To discuss your custom 3U Rackmount Case build, email [email protected] and we’ll tailor a solution to your exact requirements.