Panduit RSB1C 1U Rack Spacer Bracket

The Panduit RSB1C is a 1 RU steel rack spacer bracket designed to create 5.3 inches of clearance between vertical rack rails and horizontal cable management accessories. When deploying finger-duct managers, D-rings, or panel-mount accessories that extend beyond the standard equipment plane, this bracket provides the offset needed to align components and maintain proper cable bend radius. Each kit includes two black powder-coated steel brackets and mounting hardware. Common in datacenters, telecom closets, and AV equipment racks where high-density cabling requires dedicated horizontal management layers that would otherwise interfere with adjacent equipment mounting.

Key Features

• 1 RU height fits standard 19" racks with square or round holes
• 5.3" depth offset for horizontal cable managers and accessories
• Steel construction with black finish for commercial rack environments
• Includes 2 brackets and complete mounting hardware per package
• 0.8" (20mm) profile width minimizes wasted rack space
• RoHS compliant for datacenter and IT facility compliance

The RSB1C mounts to vertical rack rails using standard 12-24 or M6 cage nuts (depending on rail type), creating a forward plane 5.3 inches in front of the equipment mounting surface. This offset is sized specifically for Panduit's WMPF-series horizontal cable managers and similar accessories from other manufacturers that require standoff clearance. The 1 RU height means each bracket consumes one rack unit vertically but allows you to stack multiple accessories on the same horizontal plane—common in high-density fiber or Cat6A deployments where you're running 2" finger duct alongside power distribution or horizontal patch panels. The 0.8-inch width keeps the bracket profile narrow so it doesn't obstruct adjacent mounting holes or interfere with equipment handles. Steel gauge is 16 AWG (approximately 1.5mm), providing rigidity under load without flexing when cable managers are fully dressed with 50+ cables.

Typical use case: you're installing horizontal cable managers in a 42U network rack where switch and patch panel density is high. Without spacer brackets, the 5-inch protrusion of your finger duct would block equipment handles, obstruct airflow paths, or prevent you from using the rack space directly above or below the manager. The RSB1C solves this by pushing the manager forward, creating a clean separation between the cable management layer and the active equipment layer. This is especially critical in 600mm-deep server racks (common in datacenter colocation) where rear-mounted vertical managers compete with hot-aisle clearance. Install one bracket on each side of the rack at the desired RU, then mount your horizontal manager to the brackets using the included hardware. The two-bracket kit covers one horizontal span; if you're running continuous cable management across multiple racks, order additional kits as needed. Compatible with Panduit, Chatsworth, Middle Atlantic, and most OEM rack manufacturers using standard 0.625" square hole or M6 round hole patterns.

The RSB1C is RoHS compliant and ships with all necessary mounting hardware—no need to hunt for correct screw lengths or cage nut sizes. Panduit packages this as a bracket pair specifically because single-sided mounting doesn't provide the stability needed for fully-loaded horizontal managers; both sides must be supported to prevent sag and maintain cable pathway integrity over time. The black powder coat matches standard rack finishes, so the brackets visually disappear once installed. Competitor equivalent is the Chatsworth 12310-701 (listed in spec data), but the Panduit bracket has a slightly narrower profile and includes pre-installed thread-forming screws in the kit, saving you 10 minutes per installation on multi-rack jobs. This is a stock item for integrators working on datacenter refresh projects, telecom central office builds, or enterprise AV installs where rack organization directly impacts long-term serviceability.