cnMatrix 19" Rack mount kit:

Cambium Networks MX-RACK-TX2K-0 is a rack-mount accessory for the cnMatrix TX2012R-P switch. It provides rack-mount ears for installing that switch in a 19-inch rack, helping place the network equipment in a rack-based setup.

The kit is intended for the TX2012R-P, which Cambium lists as a WISP/Tower switch with 8 PoE ports and a CRPS power supply. This makes the accessory useful when arranging that switch as part of a rack-mounted network installation.