Extended rear panels are constructed of heavy-weight black powder-coated steel with ventilation louvers.
It provides an extra 3.5" of inside-depth for larger components and hefty interconnects.
Drilling is required when installing along side standard rear panels.
All rear panels are easily removable with thumb-nuts for quick components access.
Use up to 4 for a Quad, 3 for Triple, 2 for Twin, and 1 for a Single.