Two-Post Extension Support Bracket RDAB Series

400 lbs (181 kg) Weight Capacity

The RDAB is perfect if you've ever had trouble mounting deep equipment on a 2-post rack. Deep equipment may sag and damage the housing or mounting flanges if not adequately supported. The RDAB balances your equipment in the middle of the rack improving space efficiency and stability compared to mounting equipment behind the rack. Install the RDAB first, mount your equipment to the provided 2U mounting rails or rest on the formed angle supports.


  • Constructed in 14-gauge steel.
  • Available in four (4) depths.
  • Angles mount to 19-inch, 23-inch and 24-inch EIA rack mounting rails. 
  • Ideal for mounting a UPS, Server, Switch, NVR and other rack-mount equipment.
  • Mounts to the front and/or rear of the rack for maximum load rating.
  • Finished in RAL9005 black powder coat. Complies with the Greenguard guidelines for indoor air quality.
  • Includes all four (4) pieces shown as well as mounting hardware.
  • 400 lbs (181 kg) load rating.
  • TAA-compliant for GSA Schedule purchases.
  • RoHS Compliant.
  • Manufactured in North America.



With and without RDAB

Part No. Overall Dimensions Rack Mounting Dimensions Quantity Price Buy Now
Height Width Depth Height Width Depth
(Per Bracket) Units (Including Standard Rack)
RDAB2U15 3.50 1.57 6.00 2U 3.50 19.00 15.00 74$145.169Buy Now
RDAB2U20 3.50 1.57 8.50 2U 3.50 19.00 20.00 122$152.722Buy Now
RDAB2U26 3.50 1.57 11.50 2U 3.50 19.00 26.00 118$160.275Buy Now
RDAB2U31 3.50 1.57 14.00 2U 3.50 19.00 31.00 112$167.828Buy Now
Qty Included Description Replacement Part No. Quantity Price Buy Now
2 Left bracket
2 Right bracket
4 10-32 x 0.625in screw
1 Installation instructions

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Data subject to change without notice.

Tags: 4-Post Adapter, 2-Post Rack-Mount Installation Kit