SKB / 1SKB-R4U

The SKB ""R4U"" is a highly recommended product among lightweight and durable plastic rack cases! In addition to rear rack rails that provide strong support for securing equipment, it also comes with a large handle for easy carrying. The uneven design also prevents cases from wobbling when stacked. SKB's high quality and generous support make it a favorite around the world.

Using a molding method called rotational molding (rotomolding), we achieve a high degree of design freedom and excellent strength and impact resistance. This high quality is recognized by musicians and audio engineers. The uneven design also reduces wobbling when cases are stacked, providing a better user experience. *1

*1 For stackable models, please refer to the ""Specifications List"" below.
*We also offer a shallower ""Shallow Rack Series.""

■SKB ""R4U"" Specifications
- 4U size / 44.7cm depth
- Rotational molding (rotomolding) provides excellent strength and impact resistance
- Rubber gaskets on both lids prevent water from entering the interior
- Includes handles on both sides and rear rack rails
- Convex and concave design allows for stacking
*Compatible models
SKB/R2U, R4U, R6U, R8U, R10U, R12U


The R Series Standard Type (R-U) features a matching design on the top and bottom panels, allowing for a perfect fit when stacking multiple units.
- A highly airtight rubber seal inside the lid improves waterproofing
- Rear rack rails are also included. Compatible with standard inch screws on both the front and rear.

■Technical Specifications (The following figures are manufacturer-published values.)
- Internal Dimensions
Width: 48.3 cm (19 inches)
Depth: 17.8 cm (7 inches)

- Depth: 44.7 cm (17.6 inches)
*This is the length between the rack rails.

- External Dimensions
Width: 61 cm (24 inches)
Depth: 56.9 cm (22.4 inches)
Depth: 24.6 cm (9.7 inches)

Weight: 6.6 kg