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ABB-Welcome Cavity Wall Set


Usually ships in 1-2 days.


WARNING: Cancer and Reproductive Harm –


Flush-Mount Your Station Into a Hollow Wall

When you're recessing an ABB Flush Mounted Box into a hollow wall cavity, use the ABB Cavity Wall Set to ensure a secure installation. The set of hardware is suitable for installing an outdoor station or a 4.3" video hands-free station in the box.


  • (6) Anchors
  • (6) Screws

NOTE: Requires the ABB Flush Mounted Box, sold separately.

ABB: Power & Productivity for a Better World

ABB (ASEA Brown Boveri), officially branded the ABB Group, is one of the most expansive engineering corporations in the world. From its hometown in Zurich, Switzerland, this Swedish-Swiss power and automation manufacturer spans across ~100 countries, bringing its technology to every corner of the globe. With history harking back to the 1880's, ABB is a renowned behemoth of cutting-edge development. Create a better world in your own corner of the world with products by ABB.


  • Manufacturer Part #: 51021CS
  • Warranty: 2 Years

System Capacity

  • 9 Guard Units per System
  • 60 Buildings per System
  • 250 Indoor Stations per Building
  • 9 Outdoor Stations per Building (including gate and other outdoor stations)
  • 2 Locks per Outdoor Station